A change has to be made to the AI system regarding human players getting command of a vehicle once they enter as gunner/commander.

It can't be that a vehicle driven by a Captain who doesn't belong to any group, stops driving on his own when a human Sergeant enters the vehicle as gunner or commander.

He totally ignores all waypoints and just reacts to the generic Forward-Fast-Left-Right-Backwards commands of the player.

There seems to be no possibility or command/function to disable AI drivers taking commander orders!