I reported first seeing this problem three years ago after upgrading to Fedora 31 with Firefox 75.0 and Thunderbird 68.7; but at some point, for sure by Fedora 35, the problem for me had disappeared. I just assumed they had fixed it, either intentionally are as a side effect of some other change.
I'm currently on Fedora 37 with Firefox 109.0.0 and Thunderbird 102.7.1 and haven't seen the problem re-occur after installing Fedora 35. If you are on Fedora 35 or later and seeing this problem, it has to be something perhaps unique to your system, like some combination of configuration or account settings, or a timing issue that is affected by hardware speed, etc. It definitely doesn't affect all users of Fedora, which makes it a difficult to fix if the conditions to make it occur on other systems are unknown. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to thunderbird in Ubuntu. https://bugs.launchpad.net/bugs/711305 Title: Thunderbird is already running, but is not responding. To open a new window, you must first close the existing Thunderbird process, or restart your system. Error received when clicking a mailto link in firefox. Status in Mozilla Thunderbird: Confirmed Status in thunderbird package in Ubuntu: Triaged Bug description: Binary package hint: thunderbird This thunderbird error is given when clicking a mailto link. Instead of using the thunderbird that's already open it tries to open a new instance. Preferred Applications has Thunderbird select, but I have also tried Custom command "thunderbird %s". This has been tested on 10.04 and 10.10. Both result in this error if thunderbird is already running. Thunderbird is already running, but is not responding. To open a new window, you must first close the existing Thunderbird process, or restart your system. ProblemType: Bug DistroRelease: Ubuntu 10.10 Package: thunderbird 3.1.7+build3+nobinonly-0ubuntu0.10.10.1 ProcVersionSignature: Ubuntu 2.6.35-25.44-generic 2.6.35.10 Uname: Linux 2.6.35-25-generic i686 Architecture: i386 Date: Tue Feb 1 10:19:09 2011 InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007) ProcEnviron: LANG=en_CA.utf8 SHELL=/bin/bash SourcePackage: thunderbird To manage notifications about this bug go to: https://bugs.launchpad.net/thunderbird/+bug/711305/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
