Wardens binding vow stops you from shooting, forcing you to click again. you cannot hold down fire after using a binding vow. All his other abilities allow you to hold the weapon fire button and the gun will continue shooting. Please let me know if this is intentional.
It seems any temporary Spirit Power from the casting powerup and Ammo scavenger is not adding to the total damage for abilities. It is adding to the damage correctly, but the damage displayed on the abilities is only your base spirit power.
Example 1: Correct damage with no Spirit Power...