Since there's no one left with 18.10 experiencing this bug I am going to say "Won't fix" in 18.10.
** Changed in: mutter (Ubuntu Cosmic) Status: Triaged => Won't Fix -- 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/1803319 Title: GNOME Shell task bar menus not updated with external monitor primary and laptop screen fractionally scaled To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-shell/+bug/1803319/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs