The most likely (and common) explanation I can think of for this is a buggy extension. Please open the 'Extensions' app (gnome-shell- extension-prefs) and ensure you don't have any extensions other than the three Ubuntu ones installed.
Please also run: cd ~/.local/share/gnome-shell/ rm -rf extensions and then log in again. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1949618 Title: system locks up when selection one of top 2 items in dock To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell-extension-ubuntu-dock/+bug/1949618/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
