CK III - New vassals have insane negative relations for wars from before they were vassals

[PhantomDerp]

Short summary of your issue
New vassals have insane negative relations for wars from before they were vassals

Game Version
1.5.0.2

What OS are you playing on?
Linux

What platform are you using?
Steam

What DLC do you have installed?
Royal Court,

Do you have mods enabled?
No

Have you tried verifying your game files (Steam only)?
No

How much "pain" is this causing you?
9

Please explain the issue you experienced in the most condensed way possible
Vassals are pissed about wars from before they were vassals

Please explain how to reproduce the issue
1. Do a little trolling on the neighboring realms
2. Grant a title to someone of a faith without warmongering
3. -200 Relations

Is there anything else you think could help us identify/replicate the issue?
No, but as a sidenote, you should probably cap the negative relations from war at -60 or something. -200 is ridiculous

I have attached a save game
No

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File(s) attached

 

[PhantomDerp]

I can pretty easily cheese this by granting the vassal to another vassal, then demanding conversion.

Still not ideal