Horns and offhand weapon do not benefit from Multi-weapon Fighting

[Jesse Lord]

Similar to previous issue: when horns are the primary weapon the offhand weapon does not benefit from multiweapon fighting.

To reproduce with horn as primary weapon you can put a weapon in different hands and get different hit rates. For example with dagger:

Upper right hand: 20%

Upper left hand: 35%

Lower right hand: 30%

Lower left hand: 30%

Changing the primary limb changes the percentages. If you make the Upper Left Hand the primary limb then the Upper right hand has 35% to hit with a dagger and the horn has 20%. It seems like the horn does not gain offhand to-hit bonus from multi-weapon fighting.

[Ashe]

intentional