It's normal behaviour. Dot appear only after some amount of time and/or if there many unread notifications.
If you wish immediate notification you may install Notifications Alert extension - https://extensions.gnome.org/extension/258/notifications- alert-on-user-menu/ -- 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/1559491 Title: Unread notifications dot mostly never appears, even when it should To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-gnome/+bug/1559491/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs