Urgot's Q sound bug

I played a game today where the enemy team had a corki in the bot lane, and I was playing urgot in the top lane (completely opposite sides of the map)

Throughout the entire game, whenever i used Urgot's Q ability, it had Corki's Phosphorous Bomb SFX layered on top of Urgot's Q (corrosive charge)

This persisted all game, when corki was both near me and far away from me