Seems like a graphical issue. Could you run this command in a terminal: apport-collect 886120
to add more debug information to this bug, so that we'll be able to debug the issue? Thanks ** Changed in: unity Status: New => Incomplete ** Changed in: unity (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/886120 Title: unity leaves trails when moving window if shaded To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/886120/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs