ok. The window border and the close button work! The "workspace switch window" (Ctrl + Alt + Right/Left) shows the same bug.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1672206 Title: After Waking Up from Suspend to RAM the "close button" icon (graphic) of the window and the border of the window is broken on 4k display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1672206/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs