While trying to convert villagers into zombie villagers to recure them, they are killed instead of converted. I am playing on Easy.

Update: I changed the difficulty to Hard after finding an old post with the same issue, and the zombie is broken. He would not lose interest in me and ignored the villager completely. I even placed blocks so the zombie did not have a way to path to me and he still would not lose interest. So there seem to be more than one bug.