Name: Odd haste AB on shapechange
Where: Everywhere.
When: Under Shapechange: Red Dragon, Golem, Slaad forms.
What: Extra hasted attack is not made at full AB but rather turns into a third attack at -10ab
Recreate: Cast shapechange in those three shapes, hit something.
Ideas: I am very much thinking this has to do with creature weapons, though I am not certain why. Giant and Balor shapes use their greatsword weapons fine, and they get full AB off their extra attack per round from haste.