[GAMEPLAY] Sion Q resets charge on activation

In a game of Twisted Treeline, I was playing as Sion. I charged my Q, then hit the Q key again to activate and smash my axe down. However, instead of activating, hitting Q reset the channeling of the ability.

This is the only time I recall this bug occurring, and I do not know what caused it. The possible factors or combination of factors I can think of that may have caused this are Malphite interrupting my previous Q, Yasuo ulting, and Amumu ulting. But me and that Amumu used a Sion Q / Amumu ult combo a lot in those games, and the issue never occured again.

See attached video for details.