I am playing as KoJ and have noticed a minor bug related to the Family tree and marriage. Normally when a princess is married off to another noble they show up as linked to the princess in the Family Tree. However when a princess is selectively married to an existing general not in the royal family (for example, marrying King Baldwin's daughter to Balian of Ibelin's Son) Instead of showing the new son as a member of the Royal family, it instead removes the daughter from the royal family.
This is problematic as I now have a Prince who does not show up in the family tree.