Nope, this bug is down to the NVIDIA driver. Bug 99508 (which is another issue, affecting only maximized windows) has a workaround which involves modifying a value in the Metacity theme.
-- [nvidia 169.xx] gtk window decorator somtimes draws decoration ugly or not at all https://bugs.launchpad.net/bugs/186382 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