--- a/gfx/layers/client/ClientLayerManager.cpp
+++ b/gfx/layers/client/ClientLayerManager.cpp
@@ -290,16 +290,18 @@ ClientLayerManager::EndTransactionIntern
 
   mPaintedLayerCallback = nullptr;
   mPaintedLayerCallbackData = nullptr;
 
   // Go back to the construction phase if the transaction isn't complete.
   // Layout will update the layer tree and call EndTransaction().
   mPhase = mTransactionIncomplete ? PHASE_CONSTRUCTION : PHASE_NONE;
 
+  PostPresent();
+
   NS_ASSERTION(!aCallback || !mTransactionIncomplete,
                "If callback is not null, transaction must be complete");
 
   if (gfxPlatform::GetPlatform()->DidRenderingDeviceReset()) {
     FrameLayerBuilder::InvalidateAllLayers(this);
   }
 
   return !mTransactionIncomplete;