Villagers don't spawn with biome specific skins

All villagers in different biomes have the default plains skin.

You can see the bug in these videos:

https://drive.google.com/open?id=1P9KuFgluXEIVYVWCkCxkuaEvxt8AQ1Nt

https://drive.google.com/open?id=1NRA8dg6RnuF5XfR89vRm8bAjYkzWtN1l