This was reported for 20.04 which reached it's end of support. I cannot reproduce it in 25.10. In case this is still a bug in any supported release, please comment so that the bug can be re-opened, and add a reproduction case to the bug description.
** Changed in: firefox (Ubuntu) Status: Confirmed => Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2047761 Title: Running 2 sessions almost contemporarily is impossible To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/2047761/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs