This seems to be because WM_CLASS is translated in Thunderbird, so doesn't match the StartupWMClass field in the desktop file for all locales.
This shouldn't really be translated at all ** Package changed: bamf (Ubuntu) => thunderbird (Ubuntu) ** Changed in: thunderbird (Ubuntu) Importance: Undecided => High ** Changed in: thunderbird (Ubuntu) Status: Confirmed => Triaged ** Changed in: thunderbird (Ubuntu) Assignee: (unassigned) => Chris Coulson (chrisccoulson) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/765736 Title: Thunderbird won't stay in launcher and no quicklist -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs