[GAMEPLAY] Enemies can walk through/out of Galio Ult

In my last game, on numerous occasions, whenever I used Galio ult and the enemy Udyr was in Bear mode or the Teemo used his speed boost, they were able to walk out of it. Even the Xin on my team commented and the enemy Teemo also agreed that that shouldn't have happened.

How to reproduce the bug:

1. Galio Ult on an enemy that can speed up their movement with and ability.
2. Enemy uses ability. (The Teemo said he had pressed his speedup after he was in the ult, but I'm not sure if it has to be before Galio ults or after)
3. Enemy walks out.

Also, sometimes the Udyr would walk back into the ult after he was out of the range. I'm not sure if that was him just playing badly, or if the game had the ult activate the taunt after he left the ring. I only saw it happen twice like that and only with the Udyr. The Teemo never walked back as if taunted.

Anyways, hope you guys can fix my main's ult!