I have found a work-around to get back to desktop. If you have locked the screen and it has hung you can lock/unlock by using the SUPER + L hotkey (Or whatever your shortcut key is).
-- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1804008 Title: Gnome Shell extensions crash [Object Meta.WindowActor (...), has been already deallocated .... from ubuntu-d...@ubuntu.com/theming.js:416] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1804008/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs