ARAM Game start sound plays twice on blue side

When an ARAM game starts the players on blue side hear the 'game starting sound' play twice almost simultaniously, this does not happen on red side. My guess (as a game designer myself) would be that either the blue side sound plays twice or the red side sound is global and the blue side sound is not.

Edit: Just saw this is not EUW forum, I'm on EUW and experienced the bug there, will post this on EUW forum.