Alarak Extended Lightning Sadism not rewarded

Playing ARAM, Alarak Lightning Build. Completed Extended Lightning, got the triple hero hit. According to the talent and past experience, I should have been refunded the 10% Sadism the talent takes away upon selecting it after landing the triple strike. I did not receive the sadism, even after I landed the hit 2 additional times. I checked to make sure, and the quest was marked off. Dying did not help either. Could be a one time thing, I’ll have to test more.