This bug was filed from the Socorro interface and is report bp-99443108-35e9-4e8d-861d-df1da0180222. ============================================================= Top 10 frames of crashing thread: 0 libxul.so void mozilla::ContainerState::FinishPaintedLayerData<mozilla::PaintedLayerDataNode::PopPaintedLayerData [clone .cold.839] 1 libxul.so mozilla::PaintedLayerDataNode::PopPaintedLayerData 2 libxul.so mozilla::PaintedLayerDataNode::Finish layout/painting/FrameLayerBuilder.cpp:2877 3 libxul.so mozilla::PaintedLayerDataNode::FinishAllChildren 4 libxul.so mozilla::PaintedLayerDataNode::Finish layout/painting/FrameLayerBuilder.cpp:2829 5 libxul.so mozilla::ContainerState::Finish 6 libxul.so mozilla::FrameLayerBuilder::BuildContainerLayerFor 7 libxul.so nsDisplayOpacity::BuildLayer 8 libxul.so mozilla::ContainerState::ProcessDisplayItems 9 libxul.so mozilla::FrameLayerBuilder::BuildContainerLayerFor =============================================================