Shaco Backstab + Thunderlords Bug [GAMEPLAY]

Shaco Backstab auto's don't count as 1 of the 3 attacks needed to proc thunderlords as shown in Pink Wards video attached.

1.Stand behind an enemy with thunderlords as your keystone as Shaco. 2.Auto the enemy 5-6 times to proc thunderlords instead of the intended 3. (2 backstabs, the first and the 4th or the first, third, and 5th as shown by pinkward-it depends on your attack speed) 3. Lose out on thunderlords damage in your games when you only get 3 attacks in and a backstab is one of them.

This happens with 100% consistency since the assassin update.