That's because the current artful package is an older build version of Firefox (50.1.0 - https://packages.ubuntu.com/artful/firefox) that doesn't have them. Compact themes were introduced in 53.0 (https://www.mozilla.org/firefox/53.0/releasenotes/).
Why they haven't updated the package yet I don't know, they probably will once artful reaches beta. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1698903 Title: Firefox is missing Compact Light and Compact Dark themes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1698903/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
