With some more testing I have found that the issue takes a few seconds (maybe between 3 and 5, but reasonably long) to appear when I first log in (I have not yet tested with the lock screen). I have also noticed that it is not present in the Activities Overview and takes a few moments to reappear when I exit the AO.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1613124 Title: Strange grey border appeared on top and right edges of screen when using Numix GTK+ theme To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-gnome/+bug/1613124/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs