Problem with anex Vassal

[Dimm]

Hi, I have a problem. I began to attach a vassal to France. But accession ceases at the time of the outbreak of war. With other vassals, there is no such problem. All of its provinces are not occupied, diplomatic points are sufficient,diplomatic reputaison positive , what could be the problem? as the war ends, the accession is renewed

 

[Dominion]

Occupation of capital stops annexations.

 

[Quaade]

Occupation of capital stops annexations.

afaik it stops with occupation of any province, due to the bug where you annexed vassal occupied giving odd results