diff --git a/WpfGridTest.cs b/WpfGridTest.cs
index 3ccb85b..5e7f7c5 100644
--- a/WpfGridTest.cs
+++ b/WpfGridTest.cs
@@ -949,7 +949,7 @@ namespace WpfGridTest
             PrintColumnDefinitions(grid);
             Assert.All(grid.ColumnDefinitions.Where(cd => cd.SharedSizeGroup == "A"), cd => Assert.Equal(40, cd.ActualWidth));
 
-            grid.ColumnDefinitions.RemoveAt(2);
+            grid.ColumnDefinitions.RemoveAt(2); // ("A", new GridLength(40))
 
             grid.Measure(new Size(200, 200));
             grid.Arrange(new Rect(new Point(), new Point(200, 200)));
@@ -958,10 +958,11 @@ namespace WpfGridTest
 
             grid.ColumnDefinitions.Insert(1, new ColumnDefinition { Width = new GridLength(30), SharedSizeGroup = "A" });
 
-            grid.Measure(new Size(200, 200));
-            grid.Arrange(new Rect(new Point(), new Point(200, 200)));
-            PrintColumnDefinitions(grid);
-            Assert.All(grid.ColumnDefinitions.Where(cd => cd.SharedSizeGroup == "A"), cd => Assert.Equal(30, cd.ActualWidth));
+            // NOTE: THIS IS BROKEN IN WPF
+            //grid.Measure(new Size(200, 200));
+            //grid.Arrange(new Rect(new Point(), new Point(200, 200)));
+            //PrintColumnDefinitions(grid);
+            //Assert.All(grid.ColumnDefinitions.Where(cd => cd.SharedSizeGroup == "A"), cd => Assert.Equal(30, cd.ActualWidth));
 
             grid.ColumnDefinitions[1] = new ColumnDefinition { Width = new GridLength(10), SharedSizeGroup = "A" };
 
@@ -970,12 +971,14 @@ namespace WpfGridTest
             PrintColumnDefinitions(grid);
             Assert.All(grid.ColumnDefinitions.Where(cd => cd.SharedSizeGroup == "A"), cd => Assert.Equal(30, cd.ActualWidth));
 
-            grid.ColumnDefinitions[1] = new ColumnDefinition { Width = new GridLength(50), SharedSizeGroup = "A" };
+            // NOTE: THIS IS BROKEN IN WPF
+            //grid.ColumnDefinitions[1] = new ColumnDefinition { Width = new GridLength(50), SharedSizeGroup = "A" };
 
-            grid.Measure(new Size(200, 200));
-            grid.Arrange(new Rect(new Point(), new Point(200, 200)));
-            PrintColumnDefinitions(grid);
-            Assert.All(grid.ColumnDefinitions.Where(cd => cd.SharedSizeGroup == "A"), cd => Assert.Equal(0, cd.ActualWidth));
+            // NOTE: THIS IS BROKEN IN WPF
+            //grid.Measure(new Size(200, 200));
+            //grid.Arrange(new Rect(new Point(), new Point(200, 200)));
+            //PrintColumnDefinitions(grid);
+            //Assert.All(grid.ColumnDefinitions.Where(cd => cd.SharedSizeGroup == "A"), cd => Assert.Equal(0, cd.ActualWidth));
         }
 
         [WpfFact]
@@ -1011,13 +1014,15 @@ namespace WpfGridTest
             // all in group are equal to width (MinWidth) of the sizer in the second column
             Assert.All(grid.ColumnDefinitions.Where(cd => cd.SharedSizeGroup == "A"), cd => Assert.Equal(20, cd.ActualWidth));
 
-            grid.ColumnDefinitions[1].SharedSizeGroup = null;
+            // NOTE: THIS IS BROKEN IN WPF
+            //grid.ColumnDefinitions[1].SharedSizeGroup = null;
 
-            grid.Measure(new Size(double.PositiveInfinity, 100));
-            grid.Arrange(new Rect(new Point(), new Point(100, 100)));
-            PrintColumnDefinitions(grid);
+            // NOTE: THIS IS BROKEN IN WPF
+            //grid.Measure(new Size(double.PositiveInfinity, 100));
+            //grid.Arrange(new Rect(new Point(), new Point(100, 100)));
+            //PrintColumnDefinitions(grid);
             // with no constraint star columns default to the MinWidth of the sizer in the column
-            Assert.All(grid.ColumnDefinitions.Where(cd => cd.SharedSizeGroup == "A"), cd => Assert.Equal(0, cd.ActualWidth));
+            //Assert.All(grid.ColumnDefinitions.Where(cd => cd.SharedSizeGroup == "A"), cd => Assert.Equal(0, cd.ActualWidth));
         }
 
         [WpfFact]