[Client] Game Starts Even After Leaver In Pregame Lobby

Even after a player disconnected in the pregame lobby after champions were selected (several seconds before while the counter was still going, not just before the start), the game continued to launch. Resulted in a 20 minute 4v5 game, though obviously the client should have detected the quit/disconnect and stopped the game immediately.

I wish I could inform you as to how exactly to reproduce this, but I cannot.