When expecting a villager to take a profession from the brewing stand (cleric) the villager cannot access the stand unless it is on the ground level. Villagers cannot "reach" the brewing stand if it is on a "table" or "bench".

1. Place brewing stand on top of a block.
2. Spawn villager. Notice he does not accept the cleric job
3. Move the brewing stand to the ground/floor
4. Villager immediately accepts the job