This is a bug that I first time see. So what happened was the match was about to start, yet I disconnected from the room (I think this happens to other players too ?). It was not the end, I find out that my screen stuck at the picture shown blow. That circle kept whirling, so I know that it was not my computer’s problem. The reason I know I disconnected from that server was because I heard the main menu’s music.
http://i.imgur.com/nUrcYU4.jpg
I did not restarted the game, and this is what happened next.
http://i.imgur.com/NzClWh6.jpg
(sorry for my bad English 
)