I had 2 zombie villagers trapped in separate rooms of a home while they were being cured. Immediately upon being cured the one villager ran out of the door of the room and into the other room and was promptly eaten despite the zombie villager smashing on the door.

Villagers should at least try to avoid zombies when possible instead of running at them mindlessly.

Additionally, some villagers will run around aimlessly outside at night.