Swamp costumes not working.

Hi Jakob!

The issue you reported is not actually an issue. The outfit worn by villagers is determined by the biome that they spawned in, so if a villager was spawned in with a naturally generated structure, that villager would wear the outfit of the biome it generated in (Same goes for spawning with spawn eggs and commands.) While you can get villagers with certain outfits through breeding, you can only get a certain outfit (Swamp variant in your scenario) if the same outfit is also worn by the parent villagers. This trait is randomly selected when the breeding process occurs.

TL:DR, Your breeding villagers don't have the swamp variant "Gene" meaning that newborn villagers cannot inherit the swamp gene.

Ok, thanks for the reply.

Sounds like MC-150520