Weapon quality not affecting weapons with elemental damage base? e.g. Striking Spear

Not sure if this is intended or not. I just used a few whetstones on a Striking Spear. It has lightning damage as it's base, not physical damage. The quality bonus isn't boosting it's damage but quality does affect my other weapons with phys damage. I don't think quality affects anything else so this gimps the weapon.

I have a feeling this might be a "working as intended" moment, but it would be amazing for the quality to actually effect the base elemental damage of the striking spear. Same thing with the chaos bows

Yeah, just a poor design sadly.