Ranged attackers are damn well near useless as long as they have a melee combatant friend standing in the way while fighting an enemy. I use Reanimate and it's a ton of fun to sit and raise an army from the monsters I've killed. But this one particular bug is really annoying because it makes ranged attackers ineffective.
This only happens inside of indoor maps and dungeons. Outdoors works just fine.
I'm using the Might and Magic 6,7,8 Merge Mod which is why the game looks the way it does but the bug persists throughout MM7 and MM8.