diff --git a/layout/base/nsPresShell.cpp b/layout/base/nsPresShell.cpp
index b6a5ad42884..48ab2160a11 100644
--- a/layout/base/nsPresShell.cpp
+++ b/layout/base/nsPresShell.cpp
@@ -1643,7 +1643,10 @@ PresShell::InitialReflow(nscoord aWidth, nscoord aHeight)
   }
 
   for (nsIFrame* f = rootFrame; f; f = nsLayoutUtils::GetCrossDocParentFrame(f)) {
-    f->RemoveStateBits(NS_FRAME_NO_COMPONENT_ALPHA);
+    if (f->GetStateBits() & NS_FRAME_NO_COMPONENT_ALPHA) {
+      f->InvalidateFrameSubtree();
+      f->RemoveStateBits(NS_FRAME_NO_COMPONENT_ALPHA);
+    }
   }
 
   Element *root = mDocument->GetRootElement();