[CLIENT] I started league of legends normally but music in prelogin menu kept playing

When I started league of legends the music that plays in the log in screen kept playing in a loop forever. I thought it would cancel when i start a game but it did not stop. I had to leave my game, was in normal URF, and restart league completely and turn off the music in the log in screen. When I logged on the music did not play that time and I joined back and finished the game normally... It also gave me a leaver buster warning, having to leave and quit league to stop a bug caused me to get a warning. Im not sure how this bugged happened, just normally logged on and it happened.