Reposting this here from the Steam forums, hope the devs can fix this.
I got this debuff as well and can't explain why. Even broke my paladin oath because of it. All I did was in the
Underdark Grymforge
to
persuade some of the duergar to help me kill Nere.
No idea why this should coun't as an oath break and marking me as an enemy of justice. All I did was fight bad guys.