Need More Info [1.4.2] Vassal clan leaves my kingdom while in my army

[Vicinian]

Summary: A vassal clan sometimes leaves my kingdom to join the enemy kingdom while its leader is in my army. As far as I understand, this is not supposed to happen. The leader could not have been persuaded, and I do not understand how he could join the enemy kingdom while in my army.
How to Reproduce: Form an army with a vassal, and go to war, then wait. It has happened to me while sieging.
Version: e1.4.2

 

[elysebluemoon]

Hi, do you have any mods installed? Can you upload your save file to upload.taleworlds.com? Please paste the link to this thread in the description box on the upload website so I can identify it.