I think this might be at least related to https://bugzilla.mozilla.org/show_bug.cgi?id=1334778.
** Bug watch added: Mozilla Bugzilla #1334778 https://bugzilla.mozilla.org/show_bug.cgi?id=1334778 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1660031 Title: upgrade renders firefox unusable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1660031/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
