--- a/gfx/layers/wr/WebRenderCommandBuilder.cpp
+++ b/gfx/layers/wr/WebRenderCommandBuilder.cpp
@@ -748,29 +748,31 @@ Grouper::PaintContainerItem(DIGroup* aGr
   switch (aItem->GetType()) {
     case DisplayItemType::TYPE_TRANSFORM: {
       DisplayItemClip currentClip = aItem->GetClip();
 
       gfx::Matrix matrix;
       if (currentClip.HasClip()) {
         aContext->Save();
         currentClip.ApplyTo(aContext, this->mAppUnitsPerDevPixel);
+        aContext->GetDrawTarget()->FlushItem(aItemBounds);
       } else {
         matrix = aContext->CurrentMatrix();
       }
 
       auto transformItem = static_cast<nsDisplayTransform*>(aItem);
       Matrix4x4Flagged trans = transformItem->GetTransform();
       Matrix trans2d;
       MOZ_RELEASE_ASSERT(trans.Is2D(&trans2d));
       aContext->Multiply(ThebesMatrix(trans2d));
       aGroup->PaintItemRange(this, aChildren->GetBottom(), nullptr, aContext, aRecorder);
 
       if (currentClip.HasClip()) {
         aContext->Restore();
+        aContext->GetDrawTarget()->FlushItem(aItemBounds);
       } else {
         aContext->SetMatrix(matrix);
       }
       break;
     }
     case DisplayItemType::TYPE_OPACITY: {
       auto opacityItem = static_cast<nsDisplayOpacity*>(aItem);
       float opacity = opacityItem->GetOpacity();