CK II - 3.3.5.1 (AGKP) Wrong colors on the map, mixed map modes, unexistent realms popping up after changing the landed_titles file

[Kuyavia]

One line summary of your issue
3.3.5.1 (AGKP) Wrong colors on the map, mixed map modes, unexistent realms popping up after changing the landed_titles file

Game Version
3.3.5.1

What expansions do you have installed?


Do you have mods enabled?
No

Please explain your issue is in as much detail as possible.
So basically after creating a custom empire (Empire of Lithuania), I wanted to change the color of the realm as the neighboring one had a simillar color and to me, a daltonist, it was insufferable. I figured out that I could change that in the landed_titles.txt file but it didn't work. The map started showing unexistent realms, all of the coats of arms and some of the realms' colors got mixed up, my character looked different, the realms map mode showed some of the provinces in the terrain map mode. I reverted landed_titles.txt to its original form, but it didn't change a thing. Also when I opened older save files, they also had the same bugs. Know how to fix this?

Steps to reproduce the issue.
1. Open up the landed_titles.txt file
2. Change it
3. Open any save
4. Revert the landed_titles.txt file to its original form
5. Open up the same save again

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[Silversweeeper]

CK2 hasn't been getting any support since 2020 (and everything after 2019 has just been EU4 Converter fixes, security issues being fixed, and a Linux-specific fix to the Monarch's Journey), so even if this was a bug the odds of it being fixed are pretty low... and between your checksum being very wrong and you editing files in the first place this isn't a bug as opposed to you breaking something -- rather impressively so, seeing as it messed up so many different things, and not in a fashion that's possible to reproduce with a proper edit to a title's colour (or other proper edits to landed_titles.txt) or the reversion of such an edit -- and thus isn't something that'd be bugfixed since there's no bug to fix.

Your only real chance of fixing this would be verifying the integrity of the game cache, which will overwrite all changes made to the installation directory... and if the save has been overwritten at any point after you made the edit(s) that broke things, they'll remain broken even though the game itself will be in the proper (for unmodded CK2, at least...) working order.