Another place where I've seen this occur is in Gedit, when moving text using Alt+Arrow keys while the mouse cursor is over the window.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1585329 Title: Sometimes a black rectangle appears briefly under the mouse cursor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1585329/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
