0.8.10 Win 10 Paladin Retributon 0 Damage

As the title say Retributon is only procing 0 damage. I have it at level 15 currently and the last 10 or so battle logs i’ve looked at it always does 0 damage. From the look of the battle log it might be caused by Retributon procing when the enemy hits but before the damage takes place.