I highly doubt, that any passive mob (sheep, cows, chicken, horses, rabbits), villages or any kind of temples would spawn/generate in what's basically going to be underground biome... Abandoned mineshafts should generate on them... Though the underground biomes themselves doesn't spawn on normal survival worlds yet.
I'm going to be patient with the 1.17 update, any new feature is bound to have bugs and I do not consider it to be a severe one when dripstone caves have bees in them, they don't start out hostile towards players, do they? if not, it's a mishap that can be safely ignored until Mojang patch it later.