I believe EmojiOne Mozilla (and most proper emoji-containing fonts) have issues with being overridden by DejaVu's black and white glyphs.
So you see a weird mix of black and white glyphs (from DejaVu Sans and Mono and Serif etc) and full-color (from EmojiOne Mozilla) emojis. I guess Ubuntu decided this was a problem, but now we have no full-color emojis at all. - Further explanation copy and pasted from here: https://github.com/eosrei/emojione-color-font#install-on-linux "The default serif, sans-serif and monospace font for most Linux distributions is DejaVu. DejaVu includes a wide range of symbols which override the EmojiOne Color characters." -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1644021 Title: Firefox 50 must support Emoji To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1644021/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs