URL: http://getemoji.com/
Browser / Version: Firefox Mobile 51.0
Operating System: Android 6.0.1
Problem type: Mobile site is not usable
Steps to Reproduce
Expected Behavior:
Emojis should be displayed
Actual Behavior:
Only a few Emojis are displayed
Tested on beta and nightly
_From webcompat.com with 鉂わ笍_
@bull500 thanks for reporting, can you help us with a screenshot of the issue.
@tsl143

Confirmed on my phone in Firefox 51/53. They're not doing anything special on the site, just specifying the Segoe UI Emoji font on a bunch of characters.
<p style="font-family: Segoe UI Emoji; font-size: 3.5em">
馃榾 馃槵 馃榿 馃槀 馃槂 馃槃 (etc)
</p>
Note that it's working for me in Firefox 49 and Chrome (though Chrome shows blank space instead of black boxes for some emoji that are likely not in the font).
I filed a bug with Firefox for Android on the recommendation of kats on the IRC channel.
The bug has been fixed, and today's Firefox nightly is again showing emoji on sites like this one.
Most helpful comment
The bug has been fixed, and today's Firefox nightly is again showing emoji on sites like this one.