Looks like this has been known about, but nothing useful done to really fix it, for 10 YEARS now:
https://bugzilla.mozilla.org/show_bug.cgi?id=147419 ** Bug watch added: Mozilla Bugzilla #147419 https://bugzilla.mozilla.org/show_bug.cgi?id=147419 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/627648 Title: firefox/thunderbird default to US Letter for papersize To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/627648/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
