The windowing oddity looks like bug 1665286. I can't reproduce a "complete lock up" though. When that happens what does your unity8.log show?
** Package changed: xorg-server (Ubuntu) => unity8 (Ubuntu) ** Tags removed: xmir ** Changed in: canonical-devices-system-image Status: New => Incomplete ** Changed in: gtk+3.0 (Ubuntu) Status: New => Incomplete ** Changed in: unity8 (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to gtk+3.0 in Ubuntu. https://bugs.launchpad.net/bugs/1668428 Title: gnome screen shot full lock up on zesty uniyt8 Status in Canonical System Image: Incomplete Status in gtk+3.0 package in Ubuntu: Incomplete Status in unity8 package in Ubuntu: Incomplete Bug description: Feb 27 iso build of zesty, clean u8 exploration gnome screenshot completely locks up the shell and eventually unity8 just restarts to repro: 1) launch screenshot app from the app drawer 2) make indications to take a screenshot ( i selected custom area to select) 3) "take screenshot" result: complete lock up along with windowing oddity, frozen until unity8 res To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1668428/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp