Sion and Smite
When you jungles as Sion, and if you smite a knock-back monster or minion as result of E, the smite damage will not apply and goes on cd.
When you jungles as Sion, and if you smite a knock-back monster or minion as result of E, the smite damage will not apply and goes on cd.
Confirmed video https://www.youtube.com/watch?v=7GrMPujdfhw&feature=youtu.be
This is not a bug... the knockbacked target becomes immune to all damage so it cannot die mid knockback and remove the collision/slow aspect of the ability.
100 % bug