[GAMEPLAY] Xerath ultimate hit yet did not do damage 3x to Aatrox.

Not all too sure how to show the replay, but I have the game result linked? Aatrox was walking, and I ulted him with 3 barrages, all of them connecting, yet not doing damage. All players confirmed it as "buggy." This happened directly after his blood well healing as he was walking away. This is an ARAM match.