Bug with Corki

I was playing against a Corki and he used his Gatling Gun ability. After the during that the ability lasted for was over the sound clip was still going off even though the ability's duration was over. Corki recalled but it did not stop the sound clip from continuing to go off at all. It took killing Corki to stop the sound clip from still going on and he never used the Gatling Gun ability again to my knowledge around me during the rest of that game. So I don't know what caused this bug to go off but I feel that the issue should be talked about for you guys to know.

Thanks for looking at this fellow summoners and riot employees.

Summoner Foretoldlegends