This turns out to be the zsh spaceship-prompt theme. It recurred as soon as I restored my .zshrc (with deps installed) on the fresh aarch64 install, and from there I was able to narrow it down by disabling things one at a time.
Probably not your problem to fix, though I didn't see/notice it on oracular. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2106302 Title: exit shell when it's the only tab, window stays open with no tabs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-console/+bug/2106302/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs