Do you use nvidia proprietary drivers ? It's look like the same that this bug : https://bugs.launchpad.net/ubuntu/+source/avant-window- navigator/+bug/273326
-- intrepid: awn: bad square when a new apps run https://bugs.launchpad.net/bugs/288504 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
