[CLIENT] "Intended pick -champion locked in by enemy or banned"-SFX plays when it should not play.
When champion selection ends, the client minimizes and the "League of Legends"-logo appears. When this happens, the SFX mentioned in title plays just before the game opens up. I've had the chosen champion pre-picked in every one of those games, so that might play a role in that happening but I'm not that sure about it. This SFX plays in 100% of my games.
Also, sometimes the champion's pick-quote won't play, but it's been too inconsistent to come up with possible reasons.