[GAMEPLAY] Sivir popped into the air when she was already taken down.

In a recent game, Sivir was taken down. At one point. many seconds after her animation was completed, she popped into the air as if she was hit by a knock-up. It may have something to do with the Fog-of-War and coming back into the vision as she was at the edge, but I cannot be certain that those happened together as I did not have a screenshot. I do not have information as to the exact cause. This does not happen in the replay of the game. The replay does show that the ability that took down Sivir was Fling, which is a knock-up. I do not know if that is related.