This is something that really needs to be addressed in the next patch,
When members of the opposite team quit a match, the game keeps going, so quite often you’ll end up beating a team and they will all quit, they’ll be 15 minutes left on the clock, but the game won’t end.
This is really frustrating now because unless you’re willing to wait 15 minutes doing nothing, you have to quit, therefore adding a loss to your ratio. It’s not so bad now, but when ranking comes out it’ll be a real pain.