I don't know if this is the correct subject for this feedback / opinion but it needs to be changed for sure. 

I just waged a war against an AI (he himself declared it by claiming an outpost he had ceded to me following a claim). After long minutes of fighting and looting, the end of the war has come. I am the winner.

But, because there is a big but. I can't take either the outpost it took over during the war, or any other territory because it was apparently not adjacent to mine? While they were glued. Result of the races, I left the game.

Why ? Because I bothered to wage a war to recover only gold repairs, and I lost a territory that I could not take back.

The claims system must be changed. It seems obvious to me that a balancing must be done but this is not the first war that I win and at the end of which I cannot take the territories I want for lack of score or for stupid reasons. My armies occupy these territories, they logically come to me by right.