diff --git a/gfx/layers/wr/WebRenderScrollData.cpp b/gfx/layers/wr/WebRenderScrollData.cpp
index bb4f53d8f4ab..6d4e167fa524 100644
--- a/gfx/layers/wr/WebRenderScrollData.cpp
+++ b/gfx/layers/wr/WebRenderScrollData.cpp
@@ -50,9 +50,16 @@ WebRenderLayerScrollData::Initialize(WebRenderScrollData& aOwner,
 
   MOZ_ASSERT(aItem);
   aItem->UpdateScrollData(&aOwner, this);
-  for (const ActiveScrolledRoot* asr = aItem->GetActiveScrolledRoot();
-       asr && asr != aStopAtAsr;
-       asr = asr->mParent) {
+
+  const ActiveScrolledRoot* asr = aItem->GetActiveScrolledRoot();
+  if (ActiveScrolledRoot::IsAncestor(asr, aStopAtAsr)) {
+    // If the item's ASR is an ancestor of the stop-at ASR, then we don't need
+    // any more metrics information because we'll end up duplicating what the
+    // ancestor WebRenderLayerScrollData already has.
+    asr = nullptr;
+  }
+
+  while (asr && asr != aStopAtAsr) {
     MOZ_ASSERT(aOwner.GetManager());
     FrameMetrics::ViewID scrollId = asr->GetViewId();
     if (Maybe<size_t> index = aOwner.HasMetadataFor(scrollId)) {
@@ -65,6 +72,7 @@ WebRenderLayerScrollData::Initialize(WebRenderScrollData& aOwner,
       MOZ_ASSERT(metadata->GetMetrics().GetScrollId() == scrollId);
       mScrollIds.AppendElement(aOwner.AddMetadata(metadata.ref()));
     }
+    asr = asr->mParent;
   }
 
   // aAncestorTransform, if present, is the transform from an ancestor
diff --git a/layout/painting/crashtests/crashtests.list b/layout/painting/crashtests/crashtests.list
index e5648aa75008..d29f414a0022 100644
--- a/layout/painting/crashtests/crashtests.list
+++ b/layout/painting/crashtests/crashtests.list
@@ -8,7 +8,7 @@ load 1418722-1.html
 load 1419917.html
 load 1425271-1.html
 load 1428906-1.html
-skip-if(webrender) load 1430589-1.html # bug 1421825 for webrender
+load 1430589-1.html
 load 1454105-1.html
 load 1455944-1.html
 load 1465305-1.html