Any team match that has been set up where the simultaneous games section is set at one is not generating the second game upon completion of the first game. If this is not rectified, these matches will never be completed.
There appears to be a bug where that can happen. Staff are aware but if you have specific instances you should report them.

Any team match that has been set up where the simultaneous games section is set at one is not generating the second game upon completion of the first game. If this is not rectified, these matches will never be completed.