I have a small sweet berry farm, and I came home to it today only to find that a villager somehow clipped into a slab on it and was taking damage. Usually, even if I push them, they end up just hitting the slab and staying there, but when I tried it then, it went fully inside. I know that this definitely isn't intended, but I have no idea how to replicate it. Maybe the villager was loaded before the slab?