We are aware that there is an issue in Competition mode when three players want to play several matches offline against the AI in the same team. After the first match, the third player will find themselves assigned to the opponent's team and is unable to return to their original team. This means you are unable to play several games in a row with three players on the same team.
This issue has already been reported and our developers are already looking into it. We would also like to apologise for any negative game experience this might be causing you.