there is a little bug in doubles that occurs only rarely, but it happened to me a couple of times.
It can happen when a player makes an error, but the ball is heading to the side instead of forward. I don't know how to make this error, only computer players can do it. If the other player stands in the way of the ball that is heading to the side, he can hit it and the play continues
So basically the ball gets hit two times in a row at the same side of the court.