Match Found During Champ Select?

I was in champ select and everybody else was locked in including me. The timer was going down, but around 10 seconds, it took me back to the main menu with a box saying "Match Found" and the two options "Finish what I was doing" and "Play Now" (so the old one, different than the one now) like in the picture above. It then took me to a black screen when I pressed "Play Now" and I had to dodge.