Screenshot provided. I noticed that my iron farm wasn't working and wondered why. I also noticed my villager breeder wasn't working. Wondered why. I had villagers despawn so tried to populate my breeder and long behold doesn't take the composter to become a farmer.
I then realized that my iron farm might experience the same issue, and turns out it does.
I believe 1.16 changed it so the villagers need to have access to the workstation on the same level.