Merge main into net9.0 (#24385)

### Description of Change

Merge main into net9.0

eng/cake/dotnet.cake

@@ -209,6 +209,26 @@ Task("dotnet-samples")
         RunMSBuildWithDotNet(projectsToBuild, properties, binlogPrefix: "sample-");
     });
 
+// Builds the host app for the UI Tests
+Task("uitests-apphost")
+    .IsDependentOn("dotnet-buildtasks")
+    .Does(() =>
+    {
+        var tempDir = PrepareSeparateBuildContext("samplesTest");
+
+        var properties = new Dictionary<string, string>();
+
+        if(useNuget)
+        {
+            properties = new Dictionary<string, string> {
+                ["UseWorkload"] = "true",
+                // ["GenerateAppxPackageOnBuild"] = "true",
+                ["RestoreConfigFile"] = tempDir.CombineWithFilePath("NuGet.config").FullPath,
+            };
+        }
+        RunMSBuildWithDotNet("./src/Controls/tests/TestCases.HostApp/Controls.TestCases.HostApp.csproj", properties, binlogPrefix: "uitests-apphost-");
+    });
+
 Task("dotnet-legacy-controlgallery")
     .IsDependentOn("dotnet-legacy-controlgallery-android")
     .IsDependentOn("dotnet-legacy-controlgallery-ios");

eng/pipelines/common/ui-tests-build-sample.yml

@@ -49,7 +49,7 @@ steps:
   - pwsh: echo "##vso[task.prependpath]$(DotNet.Dir)"
     displayName: 'Add .NET to PATH'
 
-  - pwsh: ./build.ps1 --target=dotnet-samples --configuration="${{ parameters.configuration }}" --${{ parameters.platform }} --verbosity=diagnostic --usenuget=false --runtimevariant="${{ parameters.runtimeVariant }}"
+  - pwsh: ./build.ps1 --target=uitests-apphost --configuration="${{ parameters.configuration }}" --${{ parameters.platform }} --verbosity=diagnostic --usenuget=false --runtimevariant="${{ parameters.runtimeVariant }}"
     displayName: 'Build the samples'
 
   - bash: |

src/Controls/src/Build.Tasks/SetPropertiesVisitor.cs

@@ -998,23 +998,35 @@ namespace Microsoft.Maui.Controls.Build.Tasks
 			//			IL_008e:  newobj instance void class [mscorlib]System.Tuple`2<class [mscorlib]System.Func`2<class ViewModel, object>, string>::'.ctor'(!0, !1)
 			//			IL_0093:  stelem.ref 
 
-			yield return Create(Ldc_I4, properties.Count);
-			yield return Create(Newarr, tupleRef);
-
-			for (var i = 0; i < properties.Count; i++)
+			var handlers = new List<(MethodDefinition PartGetter, string PropertyName)>();
+			for (int i = 0; i < properties.Count; i++)
 			{
 				if (properties[i].property == null)
 					continue;
+
+				var partGetter = partGetters[i];
+				var propertyName = properties[i].Item1.Name;
+
+				handlers.Add((partGetter, propertyName));
+
+				// for indexers add also a handler for the specific index
+				if (properties[i].Item3 is not null)
+				{
+					handlers.Add((partGetter, $"{propertyName}[{properties[i].Item3}]"));
+				}
+			}
+
+			yield return Create(Ldc_I4, handlers.Count);
+			yield return Create(Newarr, tupleRef);
+
+			for (var i = 0; i < handlers.Count; i++)
+			{
 				yield return Create(Dup);
 				yield return Create(Ldc_I4, i);
 				yield return Create(Ldnull);
-				yield return Create(Ldftn, partGetters[i]);
+				yield return Create(Ldftn, handlers[i].PartGetter);
 				yield return Create(Newobj, module.ImportReference(funcCtor));
-				if (properties[i].Item3 == null) //no indexer
-					yield return Create(Ldstr, properties[i].Item1.Name);
-				else
-					yield return Create(Ldstr, $"{properties[i].Item1.Name}[{properties[i].Item3}]");
-
+				yield return Create(Ldstr, handlers[i].PropertyName);
 				yield return Create(Newobj, module.ImportReference(tupleCtor));
 				yield return Create(Stelem_Ref);
 			}

src/Controls/src/Core/Handlers/Items/Android/MauiRecyclerView.cs

@@ -428,29 +428,34 @@ namespace Microsoft.Maui.Controls.Handlers.Items
 			var item = args.Item;
 			if (args.Mode == ScrollToMode.Position)
 			{
-				item = FindBoundItem(args);
+				// Do not use `IGroupableItemsViewSource` since `UngroupedItemsSource` also implements that interface
+				if (ItemsViewAdapter.ItemsSource is UngroupedItemsSource)
+				{
+					return args.Index;
+				}
+				else if (ItemsViewAdapter.ItemsSource is IGroupableItemsViewSource groupItemSource)
+				{
+					item = FindBoundItemInGroup(args, groupItemSource);
+				}
 			}
 
 			return ItemsViewAdapter.GetPositionForItem(item);
 		}
 
-		private object FindBoundItem(ScrollToRequestEventArgs args)
+		private static object FindBoundItemInGroup(ScrollToRequestEventArgs args, IGroupableItemsViewSource groupItemSource)
 		{
-			if (args.Index >= ItemsViewAdapter.ItemsSource.Count)
-			{
-				return null;
-			}
-
-			if (ItemsViewAdapter.ItemsSource is IGroupableItemsViewSource groupItemSource &&
-				args.GroupIndex >= 0 &&
+			if (args.GroupIndex >= 0 &&
 				args.GroupIndex < groupItemSource.Count)
 			{
 				var group = groupItemSource.GetGroupItemsViewSource(args.GroupIndex);
 
-				// NOTE: GetItem calls AdjustIndexRequest, which subtracts 1 if we have a header
-				return group.GetItem(args.Index + 1);
+				if (group is not null)
+				{
+					// GetItem calls AdjustIndexRequest, which subtracts 1 if we have a header (UngroupedItemsSource does not do this)
+					return group.GetItem(args.Index + 1);
+				}
 			}
-			return ItemsViewAdapter.ItemsSource.GetItem(args.Index);
+			return groupItemSource.GetItem(args.Index);
 		}
 
 		protected virtual void UpdateItemSpacing()

src/Controls/src/Core/Platform/Windows/Extensions/FormattedStringExtensions.cs

@@ -79,6 +79,7 @@ namespace Microsoft.Maui.Controls.Platform
 						Foreground = textColor?.ToPlatform(),
 					};
 
+					run.Foreground = textColor?.ToPlatform();
 					textBlock.TextHighlighters.Add(textHighlighter);
 				}
 

src/Controls/tests/DeviceTests/Elements/CollectionView/CollectionViewTests.cs

@@ -172,6 +172,65 @@ namespace Microsoft.Maui.DeviceTests
 #if IOS || MACCATALYST || WINDOWS
 Skip = "Fails: https://github.com/dotnet/maui/issues/17664"
 #endif
+)]
+		public async Task CollectionScrollToUngroupedWorks()
+		{
+			SetupBuilder();
+
+			var dataList = new List<TestData>();
+			string letters = "abcdefghijklmnopqrstuvwxyz";
+			for (int i = 0; i < letters.Length; i++)
+			{
+				dataList.Add(new TestData
+				{
+					Name = $"{letters[i]}"
+				});
+			}
+
+			var collectionView = new CollectionView
+			{
+				IsGrouped = false,
+				ItemsSource = dataList,
+				ItemTemplate = new DataTemplate(() =>
+				{
+					var name = new Label()
+					{
+						TextColor = Colors.Grey,
+						HeightRequest = 64
+					};
+					name.SetBinding(Label.TextProperty, "Name");
+					return name;
+				})
+			};
+
+			await CreateHandlerAndAddToWindow<CollectionViewHandler>(collectionView, async handler =>
+			{
+				collectionView.ScrollTo(index: 24, animate: false); // Item "x"
+
+				int retryCount = 3;
+				bool foundItem = false;
+				while (retryCount > 0 && !foundItem)
+				{
+					retryCount--;
+					await Task.Delay(500);
+					for (int i = 0; i < collectionView.LogicalChildrenInternal.Count; i++)
+					{
+						var item = collectionView.LogicalChildrenInternal[i];
+						if (item is Label label && label.Text.Equals("x", StringComparison.OrdinalIgnoreCase))
+						{
+							foundItem = true;
+							break;
+						}
+					}
+				}
+				Assert.True(foundItem);
+			});
+		}
+
+		[Fact(
+#if IOS || MACCATALYST
+Skip = "Fails on iOS/macOS: https://github.com/dotnet/maui/issues/17664"
+#endif
 )]
 		public async Task CollectionScrollToGroupWorks()
 		{

src/Controls/tests/TestCases.HostApp/Issues/Issue10645.cs

@@ -0,0 +1,24 @@
+using Microsoft.Maui.Controls;
+
+namespace Maui.Controls.Sample.Issues
+{
+	[Issue(IssueTracker.Github, 10645, "Image is not centered in AspectFill mode", PlatformAffected.UWP)]
+	public class Issue10645 : TestContentPage
+	{
+		protected override void Init()
+		{
+			Content =
+				new Grid()
+				{
+					new Image()
+					{
+						AutomationId = "AspectFillImage",
+						Aspect = Microsoft.Maui.Aspect.AspectFill,
+						WidthRequest = 100,
+						HeightRequest = 200,
+	  					Source = "dotnet_bot.png",
+					}
+				};
+		}
+	}
+}

src/Controls/tests/TestCases.HostApp/Issues/Issue18720.xaml

@@ -0,0 +1,61 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             x:Class="Maui.Controls.Sample.Issues.Issue18720"
+             xmlns:controls="clr-namespace:Maui.Controls.Sample.Issues">
+  <ContentPage.Resources>
+    <ResourceDictionary>
+
+      <Style TargetType="Button">
+        <Setter Property="HeightRequest" Value="36" />
+        <Setter Property="FontSize" Value="9" />
+      </Style>
+
+    </ResourceDictionary>
+  </ContentPage.Resources>
+  <VerticalStackLayout
+     Padding="30,0"
+     Spacing="25">
+    <VerticalStackLayout
+      x:Name="TestLayout">
+      <Label 
+        Text="BackgroundColor" />
+      <Entry      
+        x:Name="BackgroundColorEntry"/>
+      <Button    
+        x:Name="UpdateBackgroundColorButton"
+        Text="Update Background Color"
+        Clicked="OnUpdateBackgroundColorButtonClicked"/>
+      <Button
+        x:Name="ClearBackgroundColorButton"
+        Text="Clear Background Color"
+        Clicked="OnClearBackgroundColorButtonClicked"/>
+      <Label 
+        Text="Background" />
+      <Entry      
+        x:Name="BackgroundEntry"/>
+      <Button    
+        x:Name="UpdateBackgroundButton"
+        Text="Update Background"
+        Clicked="OnUpdateBackgroundButtonClicked"/>
+      <Button
+        x:Name="ClearBackgroundButton"
+        Text="Clear Background"
+        Clicked="OnClearBackgroundButtonClicked"/>
+      <Button 
+        x:Name="TestButton"
+        AutomationId="TestButton"
+        Text="Test"
+        Margin="0, 12"
+        Clicked="OnTestButtonClicked"/>
+    </VerticalStackLayout>
+    <Label 
+      Text="Custom Entry (Null Android Background)" />
+    <controls:Issue18720Entry1 
+      AutomationId="CustomEntry1"/>
+    <Label 
+      Text="Custom Entry (Custom Android Drawable)" />
+    <controls:Issue18720Entry2 
+      AutomationId="CustomEntry2"/>
+  </VerticalStackLayout>
+</ContentPage>

src/Controls/tests/TestCases.HostApp/Issues/Issue18720.xaml.cs

@@ -0,0 +1,117 @@
+using System;
+using Microsoft.Maui;
+using Microsoft.Maui.Controls;
+using Microsoft.Maui.Controls.Xaml;
+using Microsoft.Maui.Graphics;
+using Microsoft.Maui.Hosting;
+
+namespace Maui.Controls.Sample.Issues
+{
+	[XamlCompilation(XamlCompilationOptions.Compile)]
+	[Issue(IssueTracker.Github, 18720, "Setting the background property of AppCompatEditText (Entry) in a handler mapping does not work", PlatformAffected.Android)]
+	public partial class Issue18720 : ContentPage
+	{
+		public Issue18720()
+		{
+			InitializeComponent();
+			UpdateEntryBackgroundColor();
+			UpdateEntryBackground();
+		}
+
+		void OnUpdateBackgroundColorButtonClicked(object sender, System.EventArgs e)
+		{
+			UpdateEntryBackgroundColor();
+		}
+
+		void OnClearBackgroundColorButtonClicked(object sender, System.EventArgs e)
+		{
+			BackgroundColorEntry.BackgroundColor = null;
+		}
+
+		void OnUpdateBackgroundButtonClicked(object sender, System.EventArgs e)
+		{
+			UpdateEntryBackground();
+		}
+
+		void OnClearBackgroundButtonClicked(object sender, System.EventArgs e)
+		{
+			BackgroundEntry.Background = null;
+		}
+
+		void OnTestButtonClicked(object sender, EventArgs e)
+		{
+			TestLayout.IsVisible = false;
+		}
+
+		void UpdateEntryBackgroundColor()
+		{
+			Random rnd = new Random();
+			Color backgroundColor = Color.FromRgba(rnd.Next(256), rnd.Next(256), rnd.Next(256), 255);
+			BackgroundColorEntry.BackgroundColor = backgroundColor;
+		}
+
+		void UpdateEntryBackground()
+		{
+			Random rnd = new Random();
+			Color startColor = Color.FromRgba(rnd.Next(256), rnd.Next(256), rnd.Next(256), 255);
+			Color endColor = Color.FromRgba(rnd.Next(256), rnd.Next(256), rnd.Next(256), 255);
+
+			BackgroundEntry.Background = new LinearGradientBrush
+			{
+				EndPoint = new Point(1, 0),
+				GradientStops = new GradientStopCollection
+				{
+					new GradientStop { Color = startColor },
+					new GradientStop { Color = endColor, Offset = 1 }
+				}
+			};
+		}
+	}
+
+	public class Issue18720Entry1 : Entry
+	{
+
+	}
+
+	public class Issue18720Entry2 : Entry
+	{
+
+	}
+
+	public static class Issue18720Extensions
+	{
+		public static MauiAppBuilder Issue18720AddMappers(this MauiAppBuilder builder)
+		{
+			builder.ConfigureMauiHandlers(handlers =>
+			{
+				Microsoft.Maui.Handlers.EntryHandler.Mapper.AppendToMapping(nameof(Issue18720Entry1), (handler, view) =>
+				{
+					if (view is Issue18720Entry1)
+					{
+#if ANDROID
+						handler.PlatformView.Background = null;
+						handler.PlatformView.SetBackgroundColor(Android.Graphics.Color.Pink);
+						handler.PlatformView.SetTextColor(Android.Graphics.Color.WhiteSmoke);
+#endif
+					}
+				});
+
+				Microsoft.Maui.Handlers.EntryHandler.Mapper.AppendToMapping(nameof(Issue18720Entry2), (handler, view) =>
+				{
+					if (view is Issue18720Entry2)
+					{
+#if ANDROID
+						Android.Graphics.Drawables.GradientDrawable gd = new Android.Graphics.Drawables.GradientDrawable();
+						gd.SetCornerRadius(10);
+						gd.SetStroke(2, Android.Graphics.Color.Violet);
+						handler.PlatformView.Background = gd;
+						handler.PlatformView.SetTextColor(Android.Graphics.Color.DeepPink);
+#endif
+					}
+				});
+			});
+
+			return builder;
+		}
+	}
+}

src/Controls/tests/TestCases.HostApp/Issues/Issue18720DatePicker.xaml

@@ -0,0 +1,61 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             x:Class="Maui.Controls.Sample.Issues.Issue18720DatePicker"
+             xmlns:controls="clr-namespace:Maui.Controls.Sample.Issues">
+  <ContentPage.Resources>
+    <ResourceDictionary>
+
+      <Style TargetType="Button">
+        <Setter Property="HeightRequest" Value="36" />
+        <Setter Property="FontSize" Value="9" />
+      </Style>
+
+    </ResourceDictionary>
+  </ContentPage.Resources>
+  <VerticalStackLayout
+     Padding="30,0"
+     Spacing="25">
+    <VerticalStackLayout
+      x:Name="TestLayout">
+      <Label 
+        Text="BackgroundColor" />
+      <DatePicker      
+        x:Name="BackgroundColorDatePicker"/>
+      <Button    
+        x:Name="UpdateBackgroundColorButton"
+        Text="Update Background Color"
+        Clicked="OnUpdateBackgroundColorButtonClicked"/>
+      <Button
+        x:Name="ClearBackgroundColorButton"
+        Text="Clear Background Color"
+        Clicked="OnClearBackgroundColorButtonClicked"/>
+      <Label 
+        Text="Background" />
+      <DatePicker      
+        x:Name="BackgroundDatePicker"/>
+      <Button    
+        x:Name="UpdateBackgroundButton"
+        Text="Update Background"
+        Clicked="OnUpdateBackgroundButtonClicked"/>
+      <Button
+        x:Name="ClearBackgroundButton"
+        Text="Clear Background"
+        Clicked="OnClearBackgroundButtonClicked"/>
+      <Button 
+        x:Name="TestButton"
+        AutomationId="TestButton"
+        Text="Test"
+        Margin="0, 12"
+        Clicked="OnTestButtonClicked"/>
+    </VerticalStackLayout>
+    <Label 
+      Text="Custom DatePicker (Null Android Background)" />
+    <controls:Issue18720DatePicker1 
+      AutomationId="CustomDatePicker1"/>
+    <Label 
+      Text="Custom DatePicker (Custom Android Drawable)" />
+    <controls:Issue18720DatePicker2 
+      AutomationId="CustomDatePicker2"/>
+  </VerticalStackLayout>
+</ContentPage>

src/Controls/tests/TestCases.HostApp/Issues/Issue18720DatePicker.xaml.cs

@@ -0,0 +1,117 @@
+using System;
+using Microsoft.Maui;
+using Microsoft.Maui.Controls;
+using Microsoft.Maui.Controls.Xaml;
+using Microsoft.Maui.Graphics;
+using Microsoft.Maui.Hosting;
+
+namespace Maui.Controls.Sample.Issues
+{
+	[XamlCompilation(XamlCompilationOptions.Compile)]
+	[Issue(IssueTracker.ManualTest, "18720 DatePicker", "Setting the background property of AppCompatEditText (DatePicker) in a handler mapping does not work", PlatformAffected.Android)]
+	public partial class Issue18720DatePicker : ContentPage
+	{
+		public Issue18720DatePicker()
+		{
+			InitializeComponent();
+			UpdateDatePickerBackgroundColor();
+			UpdateDatePickerBackground();
+		}
+
+		void OnUpdateBackgroundColorButtonClicked(object sender, EventArgs e)
+		{
+			UpdateDatePickerBackgroundColor();
+		}
+
+		void OnClearBackgroundColorButtonClicked(object sender, EventArgs e)
+		{
+			BackgroundColorDatePicker.BackgroundColor = null;
+		}
+
+		void OnUpdateBackgroundButtonClicked(object sender, EventArgs e)
+		{
+			UpdateDatePickerBackground();
+		}
+
+		void OnClearBackgroundButtonClicked(object sender, EventArgs e)
+		{
+			BackgroundDatePicker.Background = null;
+		}
+
+		void OnTestButtonClicked(object sender, EventArgs e)
+		{
+			TestLayout.IsVisible = false;
+		}
+
+		void UpdateDatePickerBackgroundColor()
+		{
+			Random rnd = new Random();
+			Color backgroundColor = Color.FromRgba(rnd.Next(256), rnd.Next(256), rnd.Next(256), 255);
+			BackgroundColorDatePicker.BackgroundColor = backgroundColor;
+		}
+
+		void UpdateDatePickerBackground()
+		{
+			Random rnd = new Random();
+			Color startColor = Color.FromRgba(rnd.Next(256), rnd.Next(256), rnd.Next(256), 255);
+			Color endColor = Color.FromRgba(rnd.Next(256), rnd.Next(256), rnd.Next(256), 255);
+
+			BackgroundDatePicker.Background = new LinearGradientBrush
+			{
+				EndPoint = new Point(1, 0),
+				GradientStops = new GradientStopCollection
+				{
+					new GradientStop { Color = startColor },
+					new GradientStop { Color = endColor, Offset = 1 }
+				}
+			};
+		}
+	}
+
+	public class Issue18720DatePicker1 : DatePicker
+	{
+
+	}
+
+	public class Issue18720DatePicker2 : DatePicker
+	{
+
+	}
+
+	public static class Issue18720DatePickerExtensions
+	{
+		public static MauiAppBuilder Issue18720DatePickerAddMappers(this MauiAppBuilder builder)
+		{
+			builder.ConfigureMauiHandlers(handlers =>
+			{
+				Microsoft.Maui.Handlers.DatePickerHandler.Mapper.AppendToMapping(nameof(Issue18720DatePicker1), (handler, view) =>
+				{
+					if (view is Issue18720DatePicker1)
+					{
+#if ANDROID
+						handler.PlatformView.Background = null;
+						handler.PlatformView.SetBackgroundColor(Android.Graphics.Color.Pink);
+						handler.PlatformView.SetTextColor(Android.Graphics.Color.WhiteSmoke);
+#endif
+					}
+				});
+
+				Microsoft.Maui.Handlers.DatePickerHandler.Mapper.AppendToMapping(nameof(Issue18720DatePicker2), (handler, view) =>
+				{
+					if (view is Issue18720DatePicker2)
+					{
+#if ANDROID
+						Android.Graphics.Drawables.GradientDrawable gd = new Android.Graphics.Drawables.GradientDrawable();
+						gd.SetCornerRadius(10);
+						gd.SetStroke(2, Android.Graphics.Color.Violet);
+						handler.PlatformView.Background = gd;
+						handler.PlatformView.SetTextColor(Android.Graphics.Color.DeepPink);
+#endif
+					}
+				});
+			});
+
+			return builder;
+		}
+	}
+}

src/Controls/tests/TestCases.HostApp/Issues/Issue18720Editor.xaml

@@ -0,0 +1,61 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             x:Class="Maui.Controls.Sample.Issues.Issue18720Editor"
+             xmlns:controls="clr-namespace:Maui.Controls.Sample.Issues">
+  <ContentPage.Resources>
+    <ResourceDictionary>
+
+      <Style TargetType="Button">
+        <Setter Property="HeightRequest" Value="36" />
+        <Setter Property="FontSize" Value="9" />
+      </Style>
+
+    </ResourceDictionary>
+  </ContentPage.Resources>
+  <VerticalStackLayout
+     Padding="30,0"
+     Spacing="25">
+    <VerticalStackLayout
+      x:Name="TestLayout">
+      <Label 
+        Text="BackgroundColor" />
+      <Editor      
+        x:Name="BackgroundColorEditor"/>
+      <Button    
+        x:Name="UpdateBackgroundColorButton"
+        Text="Update Background Color"
+        Clicked="OnUpdateBackgroundColorButtonClicked"/>
+      <Button
+        x:Name="ClearBackgroundColorButton"
+        Text="Clear Background Color"
+        Clicked="OnClearBackgroundColorButtonClicked"/>
+      <Label 
+        Text="Background" />
+      <Editor      
+        x:Name="BackgroundEditor"/>
+      <Button    
+        x:Name="UpdateBackgroundButton"
+        Text="Update Background"
+        Clicked="OnUpdateBackgroundButtonClicked"/>
+      <Button
+        x:Name="ClearBackgroundButton"
+        Text="Clear Background"
+        Clicked="OnClearBackgroundButtonClicked"/>
+      <Button 
+        x:Name="TestButton"
+        AutomationId="TestButton"
+        Text="Test"
+        Margin="0, 12"
+        Clicked="OnTestButtonClicked"/>
+    </VerticalStackLayout>
+    <Label 
+      Text="Custom Editor (Null Android Background)" />
+    <controls:Issue18720Editor1 
+      AutomationId="CustomEditor1"/>
+    <Label 
+      Text="Custom Editor (Custom Android Drawable)" />
+    <controls:Issue18720Editor2 
+      AutomationId="CustomEditor2"/>
+  </VerticalStackLayout>
+</ContentPage>

src/Controls/tests/TestCases.HostApp/Issues/Issue18720Editor.xaml.cs

@@ -0,0 +1,117 @@
+using System;
+using Microsoft.Maui;
+using Microsoft.Maui.Controls;
+using Microsoft.Maui.Controls.Xaml;
+using Microsoft.Maui.Graphics;
+using Microsoft.Maui.Hosting;
+
+namespace Maui.Controls.Sample.Issues
+{
+	[XamlCompilation(XamlCompilationOptions.Compile)]
+	[Issue(IssueTracker.Github, "18720 Editor", "Setting the background property of AppCompatEditText (Editor) in a handler mapping does not work", PlatformAffected.Android)]
+	public partial class Issue18720Editor : ContentPage
+	{
+		public Issue18720Editor()
+		{
+			InitializeComponent();
+			UpdateEditorBackgroundColor();
+			UpdateEditorBackground();
+		}
+
+		void OnUpdateBackgroundColorButtonClicked(object sender, System.EventArgs e)
+		{
+			UpdateEditorBackgroundColor();
+		}
+
+		void OnClearBackgroundColorButtonClicked(object sender, System.EventArgs e)
+		{
+			BackgroundColorEditor.BackgroundColor = null;
+		}
+
+		void OnUpdateBackgroundButtonClicked(object sender, System.EventArgs e)
+		{
+			UpdateEditorBackground();
+		}
+
+		void OnClearBackgroundButtonClicked(object sender, System.EventArgs e)
+		{
+			BackgroundEditor.Background = null;
+		}
+
+		void OnTestButtonClicked(object sender, EventArgs e)
+		{
+			TestLayout.IsVisible = false;
+		}
+
+		void UpdateEditorBackgroundColor()
+		{
+			Random rnd = new Random();
+			Color backgroundColor = Color.FromRgba(rnd.Next(256), rnd.Next(256), rnd.Next(256), 255);
+			BackgroundColorEditor.BackgroundColor = backgroundColor;
+		}
+
+		void UpdateEditorBackground()
+		{
+			Random rnd = new Random();
+			Color startColor = Color.FromRgba(rnd.Next(256), rnd.Next(256), rnd.Next(256), 255);
+			Color endColor = Color.FromRgba(rnd.Next(256), rnd.Next(256), rnd.Next(256), 255);
+
+			BackgroundEditor.Background = new LinearGradientBrush
+			{
+				EndPoint = new Point(1, 0),
+				GradientStops = new GradientStopCollection
+				{
+					new GradientStop { Color = startColor },
+					new GradientStop { Color = endColor, Offset = 1 }
+				}
+			};
+		}
+	}
+
+	public class Issue18720Editor1 : Editor
+	{
+
+	}
+
+	public class Issue18720Editor2 : Editor
+	{
+
+	}
+
+	public static class Issue18720EditorExtensions
+	{
+		public static MauiAppBuilder Issue18720EditorAddMappers(this MauiAppBuilder builder)
+		{
+			builder.ConfigureMauiHandlers(handlers =>
+			{
+				Microsoft.Maui.Handlers.EditorHandler.Mapper.AppendToMapping(nameof(Issue18720Editor1), (handler, view) =>
+				{
+					if (view is Issue18720Editor1)
+					{
+#if ANDROID
+						handler.PlatformView.Background = null;
+						handler.PlatformView.SetBackgroundColor(Android.Graphics.Color.Pink);
+						handler.PlatformView.SetTextColor(Android.Graphics.Color.WhiteSmoke);
+#endif
+					}
+				});
+
+				Microsoft.Maui.Handlers.EditorHandler.Mapper.AppendToMapping(nameof(Issue18720Editor2), (handler, view) =>
+				{
+					if (view is Issue18720Editor2)
+					{
+#if ANDROID
+						Android.Graphics.Drawables.GradientDrawable gd = new Android.Graphics.Drawables.GradientDrawable();
+						gd.SetCornerRadius(10);
+						gd.SetStroke(2, Android.Graphics.Color.Violet);
+						handler.PlatformView.Background = gd;
+						handler.PlatformView.SetTextColor(Android.Graphics.Color.DeepPink);
+#endif
+					}
+				});
+			});
+
+			return builder;
+		}
+	}
+}

src/Controls/tests/TestCases.HostApp/Issues/Issue18720TimePicker.xaml

@@ -0,0 +1,61 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             x:Class="Maui.Controls.Sample.Issues.Issue18720TimePicker"
+             xmlns:controls="clr-namespace:Maui.Controls.Sample.Issues">
+  <ContentPage.Resources>
+    <ResourceDictionary>
+
+      <Style TargetType="Button">
+        <Setter Property="HeightRequest" Value="36" />
+        <Setter Property="FontSize" Value="9" />
+      </Style>
+
+    </ResourceDictionary>
+  </ContentPage.Resources>
+  <VerticalStackLayout
+     Padding="30,0"
+     Spacing="25">
+    <VerticalStackLayout
+      x:Name="TestLayout">
+      <Label 
+        Text="BackgroundColor" />
+      <TimePicker      
+        x:Name="BackgroundColorTimePicker"/>
+      <Button    
+        x:Name="UpdateBackgroundColorButton"
+        Text="Update Background Color"
+        Clicked="OnUpdateBackgroundColorButtonClicked"/>
+      <Button
+        x:Name="ClearBackgroundColorButton"
+        Text="Clear Background Color"
+        Clicked="OnClearBackgroundColorButtonClicked"/>
+      <Label 
+        Text="Background" />
+      <TimePicker      
+        x:Name="BackgroundTimePicker"/>
+      <Button    
+        x:Name="UpdateBackgroundButton"
+        Text="Update Background"
+        Clicked="OnUpdateBackgroundButtonClicked"/>
+      <Button
+        x:Name="ClearBackgroundButton"
+        Text="Clear Background"
+        Clicked="OnClearBackgroundButtonClicked"/>
+      <Button 
+        x:Name="TestButton"
+        AutomationId="TestButton"
+        Text="Test"
+        Margin="0, 12"
+        Clicked="OnTestButtonClicked"/>
+    </VerticalStackLayout>
+    <Label 
+      Text="Custom TimePicker (Null Android Background)" />
+    <controls:Issue18720TimePicker1 
+      AutomationId="CustomTimePicker1"/>
+    <Label 
+      Text="Custom TimePicker (Custom Android Drawable)" />
+    <controls:Issue18720TimePicker2 
+      AutomationId="CustomTimePicker2"/>
+  </VerticalStackLayout>
+</ContentPage>

src/Controls/tests/TestCases.HostApp/Issues/Issue18720TimePicker.xaml.cs

@@ -0,0 +1,117 @@
+using System;
+using Microsoft.Maui;
+using Microsoft.Maui.Controls;
+using Microsoft.Maui.Controls.Xaml;
+using Microsoft.Maui.Graphics;
+using Microsoft.Maui.Hosting;
+
+namespace Maui.Controls.Sample.Issues
+{
+	[XamlCompilation(XamlCompilationOptions.Compile)]
+	[Issue(IssueTracker.ManualTest, "18720 TimePicker", "Setting the background property of AppCompatEditText (TimePicker) in a handler mapping does not work", PlatformAffected.Android)]
+	public partial class Issue18720TimePicker : ContentPage
+	{
+		public Issue18720TimePicker()
+		{
+			InitializeComponent();
+			UpdateTimePickerBackgroundColor();
+			UpdateTimePickerBackground();
+		}
+
+		void OnUpdateBackgroundColorButtonClicked(object sender, EventArgs e)
+		{
+			UpdateTimePickerBackgroundColor();
+		}
+
+		void OnClearBackgroundColorButtonClicked(object sender, EventArgs e)
+		{
+			BackgroundColorTimePicker.BackgroundColor = null;
+		}
+
+		void OnUpdateBackgroundButtonClicked(object sender, EventArgs e)
+		{
+			UpdateTimePickerBackground();
+		}
+
+		void OnClearBackgroundButtonClicked(object sender, EventArgs e)
+		{
+			BackgroundTimePicker.Background = null;
+		}
+
+		void OnTestButtonClicked(object sender, EventArgs e)
+		{
+			TestLayout.IsVisible = false;
+		}
+
+		void UpdateTimePickerBackgroundColor()
+		{
+			Random rnd = new Random();
+			Color backgroundColor = Color.FromRgba(rnd.Next(256), rnd.Next(256), rnd.Next(256), 255);
+			BackgroundColorTimePicker.BackgroundColor = backgroundColor;
+		}
+
+		void UpdateTimePickerBackground()
+		{
+			Random rnd = new Random();
+			Color startColor = Color.FromRgba(rnd.Next(256), rnd.Next(256), rnd.Next(256), 255);
+			Color endColor = Color.FromRgba(rnd.Next(256), rnd.Next(256), rnd.Next(256), 255);
+
+			BackgroundTimePicker.Background = new LinearGradientBrush
+			{
+				EndPoint = new Point(1, 0),
+				GradientStops = new GradientStopCollection
+				{
+					new GradientStop { Color = startColor },
+					new GradientStop { Color = endColor, Offset = 1 }
+				}
+			};
+		}
+	}
+
+	public class Issue18720TimePicker1 : TimePicker
+	{
+
+	}
+
+	public class Issue18720TimePicker2 : TimePicker
+	{
+
+	}
+
+	public static class Issue18720TimePickerExtensions
+	{
+		public static MauiAppBuilder Issue18720TimePickerAddMappers(this MauiAppBuilder builder)
+		{
+			builder.ConfigureMauiHandlers(handlers =>
+			{
+				Microsoft.Maui.Handlers.TimePickerHandler.Mapper.AppendToMapping(nameof(Issue18720TimePicker1), (handler, view) =>
+				{
+					if (view is Issue18720TimePicker1)
+					{
+#if ANDROID
+						handler.PlatformView.Background = null;
+						handler.PlatformView.SetBackgroundColor(Android.Graphics.Color.Pink);
+						handler.PlatformView.SetTextColor(Android.Graphics.Color.WhiteSmoke);
+#endif
+					}
+				});
+
+				Microsoft.Maui.Handlers.TimePickerHandler.Mapper.AppendToMapping(nameof(Issue18720TimePicker2), (handler, view) =>
+				{
+					if (view is Issue18720TimePicker2)
+					{
+#if ANDROID
+						Android.Graphics.Drawables.GradientDrawable gd = new Android.Graphics.Drawables.GradientDrawable();
+						gd.SetCornerRadius(10);
+						gd.SetStroke(2, Android.Graphics.Color.Violet);
+						handler.PlatformView.Background = gd;
+						handler.PlatformView.SetTextColor(Android.Graphics.Color.DeepPink);
+#endif
+					}
+				});
+			});
+
+			return builder;
+		}
+	}
+}

src/Controls/tests/TestCases.HostApp/Issues/Issue23488.xaml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             x:Class="Maui.Controls.Sample.Issues.Issue23488">
+
+  <StackLayout HorizontalOptions="Center"
+               VerticalOptions="Center">
+    <Label Text="hyperlink"
+           TextColor="Blue"
+           TextDecorations="Underline" />
+    <Label AutomationId="WaitForLabelControl">
+      <Label.FormattedText>
+        <FormattedString>
+          <Span Text="hyperlink" 
+                TextColor="Blue"
+                TextDecorations="Underline" />
+        </FormattedString>
+      </Label.FormattedText>
+    </Label>
+  </StackLayout>
+
+</ContentPage>

src/Controls/tests/TestCases.HostApp/Issues/Issue23488.xaml.cs

@@ -0,0 +1,12 @@
+namespace Maui.Controls.Sample.Issues
+{
+	[XamlCompilation(XamlCompilationOptions.Compile)]
+	[Issue(IssueTracker.Github, 23488, "Span text-decoration is incorrect whereas the Label behaves properly", PlatformAffected.UWP)]
+	public partial class Issue23488 : ContentPage
+    {
+        public Issue23488()
+        {
+            InitializeComponent();
+        }
+    }
+}

src/Controls/tests/TestCases.HostApp/MauiProgram.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using Maui.Controls.Sample.Issues;
 using Microsoft.Maui;
 using Microsoft.Maui.Controls;
@@ -23,7 +23,11 @@ namespace Maui.Controls.Sample
 					fonts.AddFont("FontAwesome.ttf", "FA");
 					fonts.AddFont("ionicons.ttf", "Ion");
 				})
-				.Issue21109AddMappers();
+				.Issue21109AddMappers()
+				.Issue18720AddMappers()
+				.Issue18720EditorAddMappers()
+				.Issue18720DatePickerAddMappers()
+				.Issue18720TimePickerAddMappers();
 
 			appBuilder.Services.AddTransient<TransientPage>();
 			appBuilder.Services.AddScoped<ScopedPage>();

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue10645.cs

@@ -0,0 +1,26 @@
+#if WINDOWS
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues
+{
+	public class Issue10645 : _IssuesUITest
+	{
+		public Issue10645(TestDevice device) : base(device)
+		{
+		}
+
+		public override string Issue => "Image is not centered in AspectFill mode";
+
+		[Test]
+		[Category(UITestCategories.ActionSheet)]
+		public void Issue10645Test()
+		{
+			App.WaitForElement("AspectFillImage", timeout: TimeSpan.FromSeconds(4));
+
+			VerifyScreenshot();
+		}
+	}
+}
+#endif

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue18720.cs

@@ -0,0 +1,30 @@
+#if ANDROID
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues
+{
+	public class Issue18720 : _IssuesUITest
+	{
+		public Issue18720(TestDevice device) : base(device)
+		{
+		}
+
+		public override string Issue => "Setting the background property of AppCompatEditText (Entry) in a handler mapping does not work";
+
+		[Test]
+		[Category(UITestCategories.Entry)]
+		public async Task SettingEntryBackgroundFromHandler()
+		{
+			App.WaitForElement("TestButton");
+			App.Tap("TestButton");
+			App.WaitForElement("CustomEntry1");
+
+			await Task.Delay(500);
+
+			VerifyScreenshot();
+		}
+	}
+}
+#endif

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue18720DatePicker.cs

@@ -0,0 +1,30 @@
+#if ANDROID
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues
+{
+	public class Issue18720DatePicker : _IssuesUITest
+	{
+		public Issue18720DatePicker(TestDevice device) : base(device)
+		{
+		}
+
+		public override string Issue => "Setting the background property of AppCompatEditText (DatePicker) in a handler mapping does not work";
+
+		[Test]
+		[Category(UITestCategories.DatePicker)]
+		public async Task SettingDatePickerBackgroundFromHandler()
+		{
+			App.WaitForElement("TestButton");
+			App.Tap("TestButton");
+			App.WaitForElement("CustomDatePicker1");
+
+			await Task.Delay(500);
+
+			VerifyScreenshot();
+		}
+	}
+}
+#endif

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue18720Editor.cs

@@ -0,0 +1,30 @@
+#if ANDROID
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues
+{
+	public class Issue18720Editor : _IssuesUITest
+	{
+		public Issue18720Editor(TestDevice device) : base(device)
+		{
+		}
+
+		public override string Issue => "Setting the background property of AppCompatEditText (Editor) in a handler mapping does not work";
+
+		[Test]
+		[Category(UITestCategories.Editor)]
+		public async Task SettingEditorBackgroundFromHandler()
+		{
+			App.WaitForElement("TestButton");
+			App.Tap("TestButton");
+			App.WaitForElement("CustomEditor1");
+
+			await Task.Delay(500);
+
+			VerifyScreenshot();
+		}
+	}
+}
+#endif

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue18720TimePicker.cs

@@ -0,0 +1,30 @@
+#if ANDROID
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues
+{
+	public class Issue18720TimePicker : _IssuesUITest
+	{
+		public Issue18720TimePicker(TestDevice device) : base(device)
+		{
+		}
+
+		public override string Issue => "Setting the background property of AppCompatEditText (TimePicker) in a handler mapping does not work";
+
+		[Test]
+		[Category(UITestCategories.TimePicker)]
+		public async Task SettingTimePickerBackgroundFromHandler()
+		{
+			App.WaitForElement("TestButton");
+			App.Tap("TestButton");
+			App.WaitForElement("CustomTimePicker1");
+
+			await Task.Delay(500);
+
+			VerifyScreenshot();
+		}
+	}
+}
+#endif

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue23488.cs

@@ -0,0 +1,25 @@
+#if !MACCATALYST
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues
+{
+    public class Issue23488 : _IssuesUITest
+    {
+		public Issue23488(TestDevice device): base(device)
+		{
+		}
+
+		public override string Issue => "Span text-decoration is incorrect whereas the Label behaves properly";
+
+		[Test]
+		[Category(UITestCategories.Label)]
+		public void LabelHyperlinkUnderlineColor()
+		{
+			App.WaitForElement("WaitForLabelControl");
+			VerifyScreenshot();
+		}
+	}
+}
+#endif

src/Controls/tests/Xaml.UnitTests/BindingsCompiler.xaml.cs

@@ -98,6 +98,10 @@ namespace Microsoft.Maui.Controls.Xaml.UnitTests
 				vm.Model[3] = "TextIndex2";
 				Assert.AreEqual("TextIndex2", layout.label3.Text);
 
+				//https://github.com/dotnet/maui/issues/23621
+				vm.Model.SetIndexerValueAndCallOnPropertyChangedWithoutIndex(3, "TextIndex3");
+				Assert.AreEqual("TextIndex3", layout.label3.Text);
+
 				//testing 2way
 				Assert.AreEqual("Text2", layout.entry0.Text);
 				((IElementController)layout.entry0).SetValueFromRenderer(Entry.TextProperty, "Text3");
@@ -235,6 +239,15 @@ namespace Microsoft.Maui.Controls.Xaml.UnitTests
 		{
 			PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
 		}
+
+		public void SetIndexerValueAndCallOnPropertyChangedWithoutIndex(int v, string value)
+		{
+			if (values[v] == value)
+				return;
+
+			values[v] = value;
+			OnPropertyChanged("Indexer");
+		}
 	}
 
 	class MockItemViewModel : INotifyPropertyChanged

src/Core/src/Core/Extensions/VisualTreeElementExtensions.cs

@@ -136,7 +136,12 @@ namespace Microsoft.Maui
 			var visualElements = new List<IVisualTreeElement>();
 			if (visualElement is IWindow window)
 			{
-				uiElement = window.Content?.ToPlatform();
+				// Get the UI.Xaml.Window so we catch everything in the app window rather than the frame which doesn't include modal content
+				var platformView = window.Handler?.PlatformView;
+				if (platformView is UI.Xaml.Window winUiWindow)
+				{
+					uiElement = winUiWindow.Content;
+				}
 			}
 			else if (visualElement is IView view)
 			{

src/Core/src/Handlers/Image/ImageHandler.Windows.cs

@@ -8,8 +8,10 @@ namespace Microsoft.Maui.Handlers
 {
 	public partial class ImageHandler : ViewHandler<IImage, WImage>
 	{
+		/// <inheritdoc/>
 		protected override WImage CreatePlatformView() => new WImage();
 
+		/// <inheritdoc/>
 		protected override void ConnectHandler(WImage platformView)
 		{
 			platformView.ImageOpened += OnImageOpened;
@@ -17,6 +19,7 @@ namespace Microsoft.Maui.Handlers
 			base.ConnectHandler(platformView);
 		}
 
+		/// <inheritdoc/>
 		protected override void DisconnectHandler(WImage platformView)
 		{
 			platformView.ImageOpened -= OnImageOpened;
@@ -25,25 +28,113 @@ namespace Microsoft.Maui.Handlers
 			SourceLoader.Reset();
 		}
 
+		/// <inheritdoc/>
 		public override bool NeedsContainer =>
 			VirtualView?.Background != null ||
+			VirtualView?.Aspect == Aspect.AspectFill ||
 			base.NeedsContainer;
 
+		/// <inheritdoc/>
+		protected override void SetupContainer()
+		{
+			base.SetupContainer();
+
+			// VerticalAlignment only works when the child's Height is Auto
+			PlatformView.Height = Primitives.Dimension.Unset;
+
+			UpdateValue(nameof(IView.Height));
+			UpdateValue(nameof(IView.Width));
+		}
+
+		/// <inheritdoc/>
+		protected override void RemoveContainer()
+		{
+			base.RemoveContainer();
+
+			UpdateValue(nameof(IView.Height));
+			UpdateValue(nameof(IView.Width));
+		}
+
+		/// <summary>
+		/// Maps the abstract <see cref="IView.Height"/> property to the platform-specific implementations.
+		/// </summary>
+		/// <param name="handler">The associated handler.</param>
+		/// <param name="view">The associated <see cref="Image"/> instance.</param>
+		public static void MapHeight(IImageHandler handler, IImage view)
+		{
+			// VerticalAlignment only works when the container's Height is set and the child's Height is Auto. The child's Height
+			// is set to Auto when the container is introduced.
+			if (handler.ContainerView is FrameworkElement container)
+			{
+				container.Height = view.Height;
+				handler.PlatformView.Height = Primitives.Dimension.Unset;
+			}
+			else
+			{
+				ViewHandler.MapHeight(handler, view);
+			}
+		}
+
+		/// <summary>
+		/// Maps the abstract <see cref="IView.Width"/> property to the platform-specific implementations.
+		/// </summary>
+		/// <param name="handler">The associated handler.</param>
+		/// <param name="view">The associated <see cref="Image"/> instance.</param>
+		public static void MapWidth(IImageHandler handler, IImage view)
+		{
+			if (handler.ContainerView is FrameworkElement container)
+			{
+				container.Width = view.Width;
+			}
+			else
+			{
+				ViewHandler.MapWidth(handler, view);
+			}
+		}
+
+		/// <summary>
+		/// Maps the abstract <see cref="IView.Background"/> property to the platform-specific implementations.
+		/// </summary>
+		/// <param name="handler">The associated handler.</param>
+		/// <param name="image">The associated <see cref="Image"/> instance.</param>
 		public static void MapBackground(IImageHandler handler, IImage image)
 		{
 			handler.UpdateValue(nameof(IViewHandler.ContainerView));
 			handler.ToPlatform().UpdateBackground(image);
 		}
 
-		public static void MapAspect(IImageHandler handler, IImage image) =>
+		/// <summary>
+		/// Maps the abstract <see cref="IImage.Aspect"/> property to the platform-specific implementations.
+		/// </summary>
+		/// <param name="handler">The associated handler.</param>
+		/// <param name="image">The associated <see cref="Image"/> instance.</param>
+		public static void MapAspect(IImageHandler handler, IImage image)
+		{
+			handler.UpdateValue(nameof(IViewHandler.ContainerView));
 			handler.PlatformView?.UpdateAspect(image);
+		}
 
+		/// <summary>
+		/// Maps the abstract <see cref="IImageSourcePart.IsAnimationPlaying"/> property to the platform-specific implementations.
+		/// </summary>
+		/// <param name="handler">The associated handler.</param>
+		/// <param name="image">The associated <see cref="Image"/> instance.</param>
 		public static void MapIsAnimationPlaying(IImageHandler handler, IImage image) =>
 			handler.PlatformView?.UpdateIsAnimationPlaying(image);
 
+		/// <summary>
+		/// Maps the abstract <see cref="IImageSourcePart.Source"/> property to the platform-specific implementations.
+		/// </summary>
+		/// <param name="handler">The associated handler.</param>
+		/// <param name="image">The associated <see cref="Image"/> instance.</param>
 		public static void MapSource(IImageHandler handler, IImage image) =>
 			MapSourceAsync(handler, image).FireAndForget(handler);
 
+		/// <summary>
+		/// Maps the abstract <see cref="IImageSourcePart.Source"/> property to the platform-specific implementations as an asynchronous operation.
+		/// </summary>
+		/// <param name="handler">The associated handler.</param>
+		/// <param name="image">The associated <see cref="Image"/> instance.</param>
 		public static Task MapSourceAsync(IImageHandler handler, IImage image) =>
 			handler.SourceLoader.UpdateImageSourceAsync();
 
@@ -66,4 +157,4 @@ namespace Microsoft.Maui.Handlers
 			}
 		}
 	}
-}
+}

src/Core/src/Handlers/Image/ImageHandler.cs

@@ -20,6 +20,10 @@ namespace Microsoft.Maui.Handlers
 		{
 #if __ANDROID__ || WINDOWS || TIZEN
 			[nameof(IImage.Background)] = MapBackground,
+#endif
+#if WINDOWS
+			[nameof(IImage.Height)] = MapHeight,
+			[nameof(IImage.Width)] = MapWidth,
 #endif
 			[nameof(IImage.Aspect)] = MapAspect,
 			[nameof(IImage.IsAnimationPlaying)] = MapIsAnimationPlaying,

src/Core/src/Platform/Android/MauiLayerDrawable.cs

@@ -0,0 +1,17 @@
+using Android.Graphics.Drawables;
+using Android.Runtime;
+
+namespace Microsoft.Maui.Platform;
+
+internal class MauiLayerDrawable : LayerDrawable
+{
+	public MauiLayerDrawable(params Drawable[] layers)
+		: base(layers)
+	{
+	}
+
+	protected MauiLayerDrawable(nint javaReference, JniHandleOwnership transfer)
+		: base(javaReference, transfer)
+	{
+	}
+}

src/Core/src/Platform/Android/ViewExtensions.cs

@@ -9,10 +9,9 @@ using Android.Views;
 using Android.Views.InputMethods;
 using Android.Widget;
 using AndroidX.AppCompat.Widget;
-using AndroidX.ConstraintLayout.Helper.Widget;
 using AndroidX.Core.Content;
 using AndroidX.Core.View;
-using AndroidX.Window.Layout;
+using Kotlin;
 using Microsoft.Maui.ApplicationModel;
 using Microsoft.Maui.Graphics;
 using Microsoft.Maui.Primitives;
@@ -188,62 +187,83 @@ namespace Microsoft.Maui.Platform
 
 		internal static void UpdateBackground(this EditText platformView, IView view)
 		{
-			if (platformView is null || platformView.Background is null || platformView.Context is null)
+			if (platformView is null || platformView.Context is null)
 			{
 				return;
 			}
 
-			// Remove previous background gradient if any
-			if (platformView.Background is MauiDrawable mauiDrawable)
+			// The user has removed the background from the platform view in platform code
+			// so we need to make sure to do absolutely nothing.
+			if (platformView.Background is null)
 			{
-				platformView.Background = null;
-				mauiDrawable.Dispose();
+				return;
 			}
 
-			if (platformView.Background is LayerDrawable layerDrawable)
+			// Get the current background of the edit text so we can make sure to not overwite it
+			// if it is not something that we have set in MAUI.
+			var previousDrawable = platformView.Background;
+
+			// Remove the previous MAUI background (if any).
+			if (previousDrawable is MauiDrawable || previousDrawable is MauiLayerDrawable)
 			{
 				platformView.Background = null;
-				layerDrawable.Dispose();
+				previousDrawable.Dispose();
+				previousDrawable = null;
 			}
 
-			// Android will reset the padding when setting a Background drawable	
-			// So we need to reapply the padding after
-			var padLeft = platformView.PaddingLeft;
-			var padTop = platformView.PaddingTop;
-			var padRight = platformView.PaddingRight;
-			var padBottom = platformView.PaddingBottom;
-
+			// Get the new background from the virtual view
 			var paint = view.Background;
-
-			Drawable? defaultBackgroundDrawable = ContextCompat.GetDrawable(platformView.Context, Resource.Drawable.abc_edit_text_material);
-
-			var previousDrawable = defaultBackgroundDrawable ?? platformView.Background;
 			var backgroundDrawable = paint.ToDrawable(platformView.Context);
 
-			if (previousDrawable is null)
-				platformView.Background = backgroundDrawable;
-			else
+			if (backgroundDrawable is not null || previousDrawable is null)
 			{
-				if (backgroundDrawable is null)
-				{
-					// The default Drawable of EditText is an InsetDrawable and setting the background we use a LayerDrawable
-					// to compose the custom background with the default behavior (bottom line).
-					//
-					// If the Background is null or is a ColorDrawable, a Custom Handler is being created, removing the default behavior.
-					// In this case, we don't want to reset the Drawable to the default one.
-					if (platformView.Background is not ColorDrawable)
-						platformView.Background = previousDrawable;
-				}
-				else
-				{
+				// There is a new background to set, or we removed a previous background and
+				// now we have to re-apply just the default "line" background.
 
-					LayerDrawable layer = new LayerDrawable(new Drawable[] { backgroundDrawable, previousDrawable });
-					platformView.Background = layer;
+				// Regardless of what the new background is, we will need to apply the default
+				// background "line" on top of it.
+				// If for some reason this returns null, then there is nothing we can do because
+				// AndroidX is probably broken since this is a resource from the AndroidX library.
+				var defaultBackground = ContextCompat.GetDrawable(platformView.Context, Resource.Drawable.abc_edit_text_material);
+
+				if (backgroundDrawable is not null)
+				{
+					// The user set some background, so we need to apply it below the default "line".
+					// If there is a broken AndroidX, then nothing we can do but just use ours.
+					SetBackground(platformView, defaultBackground is null
+						? new MauiLayerDrawable(backgroundDrawable)
+						: new MauiLayerDrawable(backgroundDrawable, defaultBackground));
+				}
+				else if (previousDrawable is null)
+				{
+					// The user set null in the virtual view (or did not set anything/kept the defaults)
+					// as we just removed a MAUI background from the platform view.
+					// This means we just use the default Material background (the "line").
+					SetBackground(platformView, defaultBackground);
 				}
 			}
+			else
+			{
+				// The drawable currently in use was not a MAUI drawable nor are we setting a new
+				// one so just do nothing and keep whatever the user has set in platform code.
+			}
 
-			// Apply previous padding
-			platformView.SetPadding(padLeft, padTop, padRight, padBottom);
+			// A helper method to set the background and re-apply the padding since
+			// Android will reset the padding when setting a Background drawable.
+			static void SetBackground(EditText platformView, Drawable? background)
+			{
+				// Cache the current padding
+				var padLeft = platformView.PaddingLeft;
+				var padTop = platformView.PaddingTop;
+				var padRight = platformView.PaddingRight;
+				var padBottom = platformView.PaddingBottom;
+
+				// Set the new background
+				platformView.Background = background;
+
+				// Apply previous padding
+				platformView.SetPadding(padLeft, padTop, padRight, padBottom);
+			}
 		}
 
 		public static void UpdateBackground(this AView platformView, Paint? background) =>

src/Core/src/Platform/Windows/ImageViewExtensions.cs

@@ -1,4 +1,5 @@
 #nullable enable
+using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Media.Imaging;
 using WImage = Microsoft.UI.Xaml.Controls.Image;
 
@@ -14,6 +15,12 @@ namespace Microsoft.Maui.Platform
 		public static void UpdateAspect(this WImage imageView, IImage image)
 		{
 			imageView.Stretch = image.Aspect.ToStretch();
+
+			if (image.Aspect == Aspect.AspectFill)
+			{
+				imageView.VerticalAlignment = VerticalAlignment.Center;
+				imageView.HorizontalAlignment = HorizontalAlignment.Center;
+			}
 		}
 
 		public static void UpdateIsAnimationPlaying(this WImage imageView, IImageSourcePart image)

src/Core/src/PublicAPI/net-windows/PublicAPI.Unshipped.txt

@@ -83,6 +83,8 @@ override Microsoft.Maui.Handlers.HybridWebViewHandler.ConnectHandler(Microsoft.U
 override Microsoft.Maui.Handlers.HybridWebViewHandler.CreatePlatformView() -> Microsoft.UI.Xaml.Controls.WebView2!
 override Microsoft.Maui.Handlers.HybridWebViewHandler.DisconnectHandler(Microsoft.UI.Xaml.Controls.WebView2! platformView) -> void
 override Microsoft.Maui.Handlers.ImageHandler.ConnectHandler(Microsoft.UI.Xaml.Controls.Image! platformView) -> void
+override Microsoft.Maui.Handlers.ImageHandler.RemoveContainer() -> void
+override Microsoft.Maui.Handlers.ImageHandler.SetupContainer() -> void
 override Microsoft.Maui.Handlers.MenuFlyoutHandler.DisconnectHandler(Microsoft.UI.Xaml.Controls.MenuFlyout! platformView) -> void
 override Microsoft.Maui.Layouts.FlexBasis.Equals(object? obj) -> bool
 override Microsoft.Maui.Layouts.FlexBasis.GetHashCode() -> int
@@ -106,6 +108,8 @@ static Microsoft.Maui.Handlers.HybridWebViewHandler.MapEvaluateJavaScriptAsync(M
 static Microsoft.Maui.Handlers.HybridWebViewHandler.Mapper -> Microsoft.Maui.IPropertyMapper<Microsoft.Maui.IHybridWebView!, Microsoft.Maui.Handlers.IHybridWebViewHandler!>!
 static Microsoft.Maui.Handlers.HybridWebViewHandler.MapSendRawMessage(Microsoft.Maui.Handlers.IHybridWebViewHandler! handler, Microsoft.Maui.IHybridWebView! hybridWebView, object? arg) -> void
 static Microsoft.Maui.Handlers.LayoutHandler.MapInputTransparent(Microsoft.Maui.ILayoutHandler! handler, Microsoft.Maui.ILayout! layout) -> void
+static Microsoft.Maui.Handlers.ImageHandler.MapHeight(Microsoft.Maui.Handlers.IImageHandler! handler, Microsoft.Maui.IImage! view) -> void
+static Microsoft.Maui.Handlers.ImageHandler.MapWidth(Microsoft.Maui.Handlers.IImageHandler! handler, Microsoft.Maui.IImage! view) -> void
 static Microsoft.Maui.Handlers.SearchBarHandler.MapIsSpellCheckEnabled(Microsoft.Maui.Handlers.ISearchBarHandler! handler, Microsoft.Maui.ISearchBar! searchBar) -> void
 static Microsoft.Maui.Handlers.SwipeItemMenuItemHandler.MapSourceAsync(Microsoft.Maui.Handlers.ISwipeItemMenuItemHandler! handler, Microsoft.Maui.ISwipeItemMenuItem! image) -> System.Threading.Tasks.Task!
 static Microsoft.Maui.Hosting.MauiHandlersCollectionExtensions.AddHandler<TType>(this Microsoft.Maui.Hosting.IMauiHandlersCollection! handlersCollection, System.Func<System.IServiceProvider!, Microsoft.Maui.IElementHandler!>! handlerImplementationFactory) -> Microsoft.Maui.Hosting.IMauiHandlersCollection!