To try to push the resolution of this bug, I've opened a new one: https://developer.apple.com/forums/thread/774794

The bug is not been fixed in the iOS nearly one year after reported, it would be nice to have at least an answer.

This isn't working for the Variation Selector-15 (U+FE0E) for all the characters. Can you please apply that variation selector to all your Unicode characters? I) Steps to reproduce the issue: navigate in safari to the page https://eurovot.com/vs.htm II) Expected result: as the 1st column of characters have the Variation Selector-15 (U+FE0E) applied, and the 2nd column have the Variation Selector-16 (U+FE0F) applied, the first column should always display orange characters and the second column emoji characters. III) Error result: some characters are working fine in the 1st column and displayed as text in orange colour, but some other aren't displayed as text, but displayed as emojis instead.