Thanks. It looks like the "gamemode" extension is causing a lot of errors in your log. Please try uninstalling that and any other non- default extensions you have:
gnome-shell-extension-gamemode gnome-shell-extension-system-monitor and cd ~/.local/share/gnome-shell/ rm -rf extensions Then log out and in again, and tell us if the problem still happens. ** Changed in: mutter (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1905637 Title: Games don't go full screen correctly with newer version of libmutter To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1905637/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs