Xfing wrote:What I'm getting at is that if I'm dual-wielding Snake in the Troll's left hand, my damage should increase by Snake's damage (3d4+12), as it does in the instances where this mechanic works properly. Instead, as I raise the Mace skill, the damage benefit from Snake is getting slowly negated. It should stay consistent, regardless of my Mace skill.
That's a quirk of MM mechanics, not a bug. Basically, only one weapon skill is used in all calculations and for damage/attack it's the 2nd weapon skill. For recovery time it's the one of slower weapon. Strange mechanic, but it can be more interesting than 2nd weapon always being beneficial.