Black zones appears when window is maximizing/minimizing
Only with X.org sessionsimplescreenrecorder-2019-08-28_00.33.25.mkv The downstream bug: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1835521
Only with X.org sessionsimplescreenrecorder-2019-08-28_00.33.25.mkv The downstream bug: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1835521