It turned out that this issue was completely apparmor related. I filed a new issue at https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1659988 , together with a patch which fixes all the issues in my case.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1643200 Title: After updating to firefox 50.0, tab goes black instead of showing web pages To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/1643200/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
