Granted titles revert to gavelkind [2.3.6]

[dintiradan]

(I posted this on Reddit, got no responses. Reposting here.)

I just had a character death in my current game, and now I'm granting the surplus duchies and counties that my new character has. All my titles are agnatic-cognatic primogeniture (aside from one kingdom which is agnatic primogeniture, which I'm not giving away yet). But whenever I grant a county or duchy to someone, succession for that title reverts to agnatic-cognatic gavelkind. Doesn't matter if I'm granting a county to an unlanded character, or a duchy to a preexisting count. I don't recall this happening before, am I missing something?

(I also had a couple APPCRASH errors tonight, first time in a while, perhaps that's related?)

Thanks for any advice.

Additional information that might be relevant:
- Playing on version 2.3.6 via Steam on Windows 8.1. I've got all major DLC up to and including Rajas of India.
- Playing a Dutch Catholic.
- After some testing: kingdoms I give away retain their succession laws. It's duchies and counties that revert to gavelkind. Doesn't matter if it's a title my new character had prior to my old character dying, or one just received.

Thanks for any help.

EDIT: Update:
- It has nothing to do with succession. I went back to an older save, and again: when giving out a primogeniture county, it turned into a gavelkind county.
- Destroying and recreating duchies doesn't affect anything: it still reverts to gavelkind after granting it to someone else.

 

[Red Earth]

I think that's just how it works. New ruler gets laws set to default and they have to change them themselves, assuming that country has the tech level to change it.

 

[Zsrai]

Your best bet may be to sift through the Bug Reports forum for any clues, 2.3.6 was quite awhile ago.

Part of the problem may be if you give out a Primo county to an already landed vassal and they have a Gavelkind title; in that case I believe that their current title would keep, and overwrite, the succession laws.

 

[StarSword]

In 2.5.2 I conquered a duchy for a count claimant. The county was gavelkind and the duchy was seniority, but the duchy shifted to gavelkind after the war ended.

 

[dintiradan]

Huh. Well, I started up a new game for testing purposes, and yeah, duchy/county titles revert to gavelkind upon granting. I'm really surprised that it took me this long to discover it, but upon reflection it makes sense:
- In the early game I was keeping titles for myself and everyone was stuck on gavelkind anyway.
- Once I got to empire-level I was either granting titles to kingdom-level vassals (at which point they'd revert to the kingdom's succession law) or landing celibate characters (in which case I didn't care what succession law they had).

This is just the first time I've had a high Diplomacy character where I had some vassal limit breathing room.

I still don't understand why kingdoms and empires keep their succession laws while counties and duchies don't, but that's far from the only mechanic that's still opaque to me.