I have seen this issue for monitors of mismatched resolutions. What resolutions do you have? Also, are the position of the monitors "snapped" on the xrandr tool?
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1707456 Title: Poor handling of vertically-arranged multi-monitors in Compiz. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-mate/+bug/1707456/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs