Well, my internet dropped a split second after accepting a match, and when it came back up 3 seconds later, I was stuck at the Accept/Decline screen.
I never was sent into the lobby to pick a champion. After, a minute, I close the client, and log back in. Now faced with a "Game Abandoned" [ RECONNECT ], I click reconnect, the button goes grey, and nothing happens.
I assume I can just wait a little til they finish the game. Just wanted to bring this to your attention. I'll update with about how long it takes to be able to join queue again.