Unfortunately I didn’t take screenshots.
Next time I see this, I’ll add one.
Occassionally enemies fall off an edge then get stuck on some small protruding rock/part of the map below the edge.
So they don’t die, but are unreachable.
In case they are ranged enemies, they keep shooting with arrows, so they can kill you. But you can’t kill them if you’re not ranged.
Encountered in the tower like places of the first beach area. Then in the forest like area northwest of the swamp with the Warrick boss.