This bug was marked as fixed upstream. Po-Hsu Lin, can you confirm whether this now works as expected for you?
** Changed in: firefox (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1407882 Title: Firefox won't automatically adjust the toolbar / tab and content size under high resolution environment in Ubuntu 14.04.1 To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/1407882/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs