@GrzesiekC: I couldn't find any trace of a thunderbird apparmor profile in official Ubuntu packages (apart from the ubuntu-email abstraction). So I'm not sure where this profile you have enabled on your machine comes from, but not from the archive, that's for sure. I'd suggest disabling it:
sudo apparmor_parser -R thunderbird and create a symlink to the overly strict profile in /etc/apparmor.d/disable. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1850064 Title: Please upgrade it to 68.x on Ubuntu 18.04 LTS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1850064/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs