Game disbanded? Sort of?

I was just in a match.. a promo match.. from which I was randomly disconnected after going back to base. Frustrating, but normally not a big deal as I'd exit and come back. Only this time when I left, there was no option to reconnect; the client even allowed me to queue up again. I went to check op.gg, and it says the game is still going on. I'm really hoping that I don't end up getting a leaverbuster or worse a promo loss because of this, because it's totally out of my hands.