Although the undirect fullscreen windows fix worked for me, I still believe that my bug has been marked as a duplicate of this one in error. The author of this bug states that garbage appears on the screen when a popup appears. In my case I can confirm that it is always the desktop background.
-- [MASTER] Applications are flickering/flashing in full screen mode https://bugs.launchpad.net/bugs/153204 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs