I started a raid, and an illagers has vanished.

I started a raid, and 3 "spells" later, one of he illagers has vanished. I checked the surrounding area, the caves, and any place it could have gotten stuck, but to no avail. The bar at the top of the screen says "Raid : One Mob remaining" and this mob could not be located. While the area around the village is quite strange I its generation, I don't see how this could have happened. Th he seed is -1813740965, an this happened into the village closest to spawn.