I can confirm this issue in Ubuntu Mate 17.10 Alpha 2. However on my test machine it has nothing to do with the sequence of keys being released, rather the HUD will not launch when Chromium, Firefox, or Thunderbird are running and NOT minimized.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1708941 Title: mate-hud does not open all the time To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mate-hud/+bug/1708941/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs