Today’s bit of fun… the macOS Character Viewer, when you use it to enter 🅿, not only enters the U+1F17F NEGATIVE SQUARED LATIN CAPITAL LETTER P codepoint, but also adds on U+FE0E VARIATION SELECTOR-15. The extra codepoint causes Safari to show that glyph as larger than the others.
Had to resort to Ctrl-V U0001f17f in Vim to get the bare codepoint.