This bug happen to me a lot, but ramdomly. I followed instructions in comment #20 and looks like is the same bug Danien talked in comment #34, there were nothing in /var/crash
** Attachment added: "prevboot.txt" https://bugs.launchpad.net/ubuntu/+source/gnome-shell-extension-ubuntu-dock/+bug/1922353/+attachment/5498566/+files/prevboot.txt -- 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/1922353 Title: Overview sometimes fails to appear or disappear in 21.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1922353/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs