Partnered Sims turn into siblings

Game Version 1.121.372.1020 DX11 Japanese

This occurs during loading (occurs during all loading sessions up to the Sim control screen).

The "Spouse" and its icon have been removed from the "Relationships" list.

The screenshot shows a Sim set as "Spouse" in CAS during new creation.

Relationship = 関係　

Even when checking with MOD/MCCC, the status is "Spouse: None."

The husband Sim also has "Spouse: None."

(See the screenshot in the title: "Loading Legacy Family Tree freezes game.")

The Sim does not have any "divorced" emotions or behaviors.

There are no "Divorce," "Deletion," or "Error" notifications in the "Notifications" section in the upper right corner.

The "Similar Behavior" and "Recently Released" packs have been uninstalled and the issue has been confirmed.

The Sims™ 4 For Rent Expansion Pack

"Neighborhood Stories" is enabled, and "Moving In" and "Moving Out" are turned off.

Programmatically,

this is the same as setting the "Place of Residence" value to "Do not overwrite by the system."

It will not change to "Homeless" or "Other Housing."

However,

the system's built-in forced event "contract termination" for the landlord causes the system to "overwrite" the "place of residence" value, turning it "homeless."

The Sims™ 4 Royalty & Legacy Expansion Pack

This has just been released.

I have uninstalled the above two packs and checked them.

Even with updates to relationships such as "legal wife"/"legal wife" and "concubine"/"wife," it is still not possible to play the game properly.

This issue continues to occur, so the game remains unplayable. In the first place, just like the system itself, divorces and marriages occur in the background without you even realizing it, and the family you're playing falls apart without you even realizing it, so you can't play.

Please note that this is a machine translation.