Sejuani Audio Bug

Some weird bug showed up in my last game where the Sejuani died, and Bristle's grunt continued to play constantly whenever Sejauni was on screen. Not entirely sure what happened, but all I know is Sejuani was killed, the death sound triggered and looped for the rest of the game. Nothing stopped it except moving the screen away from Sejuani. This happened for everyone on my team, but idk about the enemy team.