Yes, this happens every time on Unity. In fact, it's been happening for many years. It's only now that I've got round to reporting it. I can take a video on my phone if you like.
My keyboard shortcut is configured as: Name: Thunderbird Command: thunderbird Key: Super+T -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1848402 Title: No indication that thunderbird is starting To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1848402/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs