Steps to reproduce: - Open the left sidebar, make sure you have at least 2 tabs open - Tap on the border of the unselected tab. Expected result: - Tab gets highlighted on tap and gets focused after releasing the tap. Actual result - Tab gets highlighted, but does not get focused after releasing the tap. I suspect this is the reason, why I sometimes get annoyed that the tab doesn't get focused when I tab on it.
Mass resolving XUL Fennec I filed to WORKSFORME. If someone still cares about this bug, please reopen.