If you're using Intel graphics then I don't think this is going to be a driver issue.
My first guess is that a gnome-shell extension has broken rendering for the panel menu. Please uninstall (not just disable) all non-standard* gnome-shell extensions and tell us if the problem persists without extensions installed. * non-standard means everything other than gnome-shell-extension- appindicator and gnome-shell-extension-ubuntu-dock. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1808398 Title: top right menu does not display when activated To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1808398/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
