7 years later, I have this bug in Hirsute ! (or at least the same symptoms: I click on a mailto link and a window named “close Thunderbird” appears, with the message : “Thunderbird is already running, but is not responding. To use Thunderbird, you must first close the existing Thunderbird process, restart your device, or use a different profile.”
Firefox version 89.0 (64bits) Thunderbird version 78.8.1 (64 bits) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/12097 Title: mailto link always attempts to open a fresh thunderbird instance To manage notifications about this bug go to: https://bugs.launchpad.net/thunderbird/+bug/12097/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs