I'm fairly certain that this behavior did change at some point in the 17.10 process -- I believe that I used to be able to long-press the Super key and have the numbers show up.
That being said, it should also be noted that after selecting an app, the numbers don't go away again until you press Super once more and exit from the resulting screen or press Escape. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1722570 Title: Numbers of sidebar icons only show after Super + Number key had been pressed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell-extension-ubuntu-dock/+bug/1722570/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs