On this thread in Ubuntu Forums, people seem to think they have a way to stop it from happening, although the solution sounds strange. If that is really true, perhaps that will provide a debugging clue: http://ubuntuforums.org/showthread.php?t=1747222
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/709461 Title: Application windows can sometimes fail to display and will mask regions of the screen -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs