It's fine in single player, but when a friend(s) joins your world or you join their world you get their skin and they get yours but you see them in their skin still and vice versa. It's been happening for a long time now and it's even worse when there's more than 2 players as everyone's skins get swapped so there are 2 skins of player 2 and none of player 3 etc and on everyones device it looks different etc.