It's still very random and hard to catch. But recently I found that if I plugin/plugout external Screen Monitor by HDMI/VGA/..
This bug is more possible to reproducible, but still not every time. Only "close a window" may get stuck in this bug, it seems that all of other windows are 100% transparent because their menubar can still popup menu. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1538111 Title: untraceable serious bug in metacity 3.18 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/metacity/+bug/1538111/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
