[Gameplay] Gamebreaking Galio ult bug

I just played a game as Galio, and caught Pantheon with the edge of my ult. He got the 'taunted' animation, but ran in the opposite direction for ~1s before he ran back towards me, but was outside of the damage radius when the ult ended. There was nobody on my team that could have feared him or anything during my ult (I had caught him out alone).