What happened

when convert to zombies, these variants seem to lost its skin. (replaced by black & purple block)

How to reproduce

• open game instance
• spawn a villager & give it a moded job (for example, a schema table)
• trade him once for lock his job
• switch difficulty to hard
• spawn a zombie & let it kill this villager
• see what happens.

probable reason

forget to add a texture or switched texture proxy

Should be fixed in newest version :)