Well, I wasn’t suggesting anything yet, just reporting that I observe an issue when users enter legitimate content 
It’s interesting though that titles WILL display correctly if you enter emoji’s using the :emoji notation. However, the emoji picker is not activated for titles, making it harder to use them there.
I believe that emoji’s can be useful for certain topics, so I wouldn’t just strip them out.
So perhaps:
- Enable the emoji picker for titles
- Process ‘directly entered’ emojis in the same way as ‘picked’ emoji’s