Loaded 6 min into the game

I decided to retake league and have a match (since URF is back), and launched a match. I had no issue until the game starts loading, and loading.... the next thing i know, i'm 6 min into the game, and after finishing that match i got a leaverbuster warning me that my next 5 matches are going to be low priority? I don't really know if this is a bug or Riot is just giving me a warm welcome [sg-syndra]