Yorick Stuns Kennen with his W while he kennen is in his E form, GAME BREAKING BUG

In this game a game breaking bug occurred, I was playing Kennen and anytime I used my E and I would get trapped inside Yorick's W I would glitch out and be unable to move, cast abilities, use items, or flash. Rendered me useless in many fights almost losing my team the game. Please Fix makes the matchup unbalanced.