Is it possible to get more details about that from the developer team, so you can check if your save files are affected.

Or mayhaps a simple tool to have it checked?

I have decided to continue my 50h+ playthrough (now 60h+) while knowing about it could break the game. And I did not only use the ingame retrainer but also a respec mod.

So far my game is going well without any visible related issues. However, it is still like a thorn - a feeling like you are carrying a time bomb without knowing if it blows before or at the end or it does not blow at all.

I know I am doing it at own risk, considering a solution of restarting the game per se is given. But still I would welcome any information from developers side.

So far my guess is that it has something to do with story flags connected to moral alignment choices, important for evil and special mythic paths. But that is still vague and it leaves open if you can edit a save file to meet the needed criteria again.