Client Occasionally Fails to Launch the Game
So, this still happens.
I get on a team, everyone picks a champion, no one dodges, and the game starts up...except sometimes it doesn't start up for everyone.
Now, you could try closing the client and opening it again, but directly closing the client does not fix the issue. It thinks you are connected when, clearly, there is no game present on your task bar to click on to bring it up.
Only work around to this problem is to open up the Task Manager, locate LoL client and end the process. Then, you can open league, wait for it to load, then wait for the game to load you in, and hope you manage to accomplish all of this before your team is allowed the option to remake.