This appears to be a known upstream bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1508803
** Bug watch added: Mozilla Bugzilla #1508803 https://bugzilla.mozilla.org/show_bug.cgi?id=1508803 ** Also affects: firefox via https://bugzilla.mozilla.org/show_bug.cgi?id=1508803 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1921931 Title: Opening links results in "Firefox is already running, but is not responding" To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/1921931/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
