I also have that problem now (hirsute, thunderbird version 1:78.11.0+build1-0ubuntu0.21.04.2). The docks shows 2 tabs on Thunderbird while only one is open. The most annoying part is that ALT-TAB window switching does not longer work then.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1932328 Title: Thunderbird under Wayland does not correctly close (or manage) windows To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1932328/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
