Reorganising Sieging Armies Forfeits Siege Leadership

[Username7221]

In my current game, I am sieging the fort of Crimea with the help of Poland, who has attached its troops to my army. I also control the majority of the sieging units, and the siege is lead by me.

I then move my other army into the siege, and I still am leading the siege.

However, upon either merging my units directly, or re-organising them using the window below,

Poland gains control of the siege.

This is only a minor nuisance in my case, as I could crash the game to avoid restarting. However, had this been a different situation, losing control of a siege could be more crucial. Is this intended behaviour, or should I file a bug report?

 

[Manwe_Sulimo]

I had this issue before (in my case moving the original stack away after a new stack moved in, while my allies arrived after the original, but before the new stack).
I am not sure if it is a bug or if it is even intended behaviour, however if it is the later, this definitely should be changed as it is very obscure, the siege lead should remain with the first country even if it switches or reorganizes its armies.