CK II - Children born after father's death have mother's culture/religion/dynasty

[jbphilly]

One line summary of your issue
Children born after father's death have mother's culture/religion/dynasty

Game Version
3.0

What expansions do you have installed?
Jade Dragon,
The Reapers Due,
Conclave,
Horse Lords,
Way of Life,
Charlemagne,
Rajas of India,
Sons of Abraham,
The Old Gods,
The Republic,
Legacy of Rome,
Sword of Islam,
Holy Fury

Do you have mods enabled?
No

Please explain your issue is in as much detail as possible.
My male character died while his wife was pregnant. The titles passed to his eldest son under agnatic-cognatic primogeniture.

Then the widow gave birth to a daughter who had the traits of the mother rather than of the father (culture, religion, dynasty). I was playing a Catholic Vlach king who had a Greek Orthodox wife, and the daughter came out with Greek culture, Orthodox religion, and the mother's dynasty. Similar to what would happen with a bastard, but this child was legitimate.

It was definitely a normal, not matrilineal, marriage; previous children of the marriage did not have this happen.

I assume this is because children of unmarried women by default get these traits from their mother. I guess the game is not tracking who the father is at the time of creating the "pregnant" trait, but rather only when the child is born?

Steps to reproduce the issue.
1. Be a male ruler married in a normal marriage to someone of a different culture, religion, and/or dynasty.

2. Wait until wife is pregnant.

3. Die.

Upload Attachment

 

[jbphilly]

For what it's worth, I just replicated this error later in the same run...seems the RNG really favors killing your rulers in battle when doing so would put you in a long regency! Once again, my king (grand-nephew, or something, of the guy mentioned in the OP) was married to an Orthodox wife, and died in battle while she was pregnant. This time she was Russian, so the kid came out Russian, Orthodox, and her dynasty.

This kid was the second of two children, so when her older brother inherited, she became the heir and put me in danger of an instant game-over if anything happened to me while the kid was in regency and couldn't sire bastards yet.

 

[hwoosh]

Just saw this bug myself. Father with dynasty A, mother with dynasty B, normal marriage; first two kids born with dynasty A, father dies while mother is pregnant with third child, third child is born with dynasty B.

Another possibly important detail to add is that, if you look at either the wife's or the dead husband's character sheet after the death of the husband, the marriage will actually be shown as a matrilineal marriage, even though it definitely was not while the husband was alive.