--- a/layout/painting/nsDisplayList.h
+++ b/layout/painting/nsDisplayList.h
@@ -5667,16 +5667,17 @@ public:
   {
     MOZ_COUNT_DTOR(nsDisplayTransform);
   }
 #endif
 
   virtual void UpdateBounds(nsDisplayListBuilder* aBuilder) override
   {
     mStoredList.UpdateBounds(aBuilder);
+    mHasBounds = false;
   }
 
   virtual void Destroy(nsDisplayListBuilder* aBuilder) override
   {
     mStoredList.Destroy(aBuilder);
     nsDisplayItem::Destroy(aBuilder);
   }