Was testing and here's what I found. My previous LGBT love emoji toot looks messed up (specifically the space in each line not being taken into account properly) on #Tusky, #11t, #Pawoo, #TootyFruity, #Mastolin. Works on web and #Twidere.
iOS wise, it works on #Amaroq. But not on #mastodoniOS and #Pawoo.