villager randomly becoming cleric

What I expected to happen was...:
for the villager to take a job that had a job work site 

What actually happened was...:
a random villager became a cleric without brewing stand

can't trade with cleric trading screen will pop up for 1 sec then close its self

Steps to Reproduce:
i can't replicate this i don't know how it happened or why.

i was building in creative mode making a new village in a new world to go around my home, there is no brewing stand in the world.