Hi,
I am running Ubuntu Linux 12.04, with default desktop environment.
Bug: the window is not rendering correctly the first 2 seconds and the top menu bar will be flashing.
Reproducing the bug: Enter full screen, or focus mode then change to a different desktop with (for me, a keyboard shortcut), and then back again.
Issue: It probably has something to do with the fullscreen view not being properly implemented, since it is the ubuntu menu bar that is rendering incorrectly, and not sublime text.
Cheers!