Created attachment 668494 [details] Screenshot (ignore paint flashing colors) STR: - Log into facebook - Bring up the sidebar - Go to the messages view - Overscroll to the bottom - You should see the sidebar in the overscoll area.
Could it be related to benwa's recent tiling work? I remember this sort of thing happening once before and IIRC you used apitrace to track down the problem.
It's possible but not highly likely since it's off by default.
This is not reproducible anymore, so I will remove the regressionwindow-wanted keyword. Please add it again if you still need it. Build: Firefox for Android 19.0a1 (2012-10-29) Device: Samsung Galaxy Nexus OS: Android 4.1.2
WFM'ing based on comment #3