You did say that it is reproducible in vbox. Can you give steps that I should follow to at least get a chance to reproduce this?
Something like this: - download current daily iso - install it - install applications x, y and z - open a, z, y, x - try closing them - repeat? But please verify that it is really reproducible on clean install (in vbox). I am running ubuntu 16.04 from start and have not seen this bug. But I will try to reproduce this in vbox after you will post at least possible steps that could lead to this bug. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to metacity in 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 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs