NPC dual wield quadding with shields

[Robot]

Noticed that NPCs wielding shields will trigger them to be able to dual wild attack and essentially quad with the shield hand. When the shield is disarmed they cease to attack with their offhand as if the shield was a weapon. Its not a massive deal the only place this is really a problem is for killing guards in cities. Tried killing the dwarf guards in kaladim despite being several levels higher was too difficult to kill as they all have a shield and therefore swing with the offhand pretty much doing double damage of what they should be.