These are actually images, no device has emoji fonts to support the combos. On gBoard it pops them in as stickers/images so anyone can see them.

If textual communication is about the lowest common denominator of capabilities, no one would be commenting in hacker news comments :)

While these are typed using emoji, they are sent as images, so they do not rely on fonts.

I would have tested it myself in Gboard, but it relies on the "suggestions" feature which requires internet access, which I will not accept for a keyboard app.

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