The other issue I raised, about missing dictionaries for the current locale, should be a separate bug report.
Therefor I created one: https://launchpad.net/ubuntu/+source/firefox/+bug/86400 -- Duplicate spell checking dictionaries for EN/UK and EN/US https://launchpad.net/bugs/66015 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs