When that bad thing happened to your renown, did your age also change by any chance? Or did you become a relative of some lords/ladies?
I loaded my save now, went to the characters screen to see who I am related to, and I can't see anything wrong with it. No family.
As for the second bug - did it happen once or keeps happening?
Keeps happening.
Do you play using random Native scenes or new custom ones (that don't have chest)?
New custom ones. Eg. the option is not ticked to use the old random native scenes. I never had this error up until this renown thing happened.
And why are you wearing inappropriate armor/helmet?
It's just the body armor. The helmet is Drachen!
Also, because the game allows me, thus I can
(had a lower quality fountain guard armor up until a few in-game days ago, but I couldn't rezist the body increase). I mean, I just can't resist to do this on my own (only use racial stuff). I need laws and regulations
Also, I had another error now, after loading my save:
It almost seems as if all these errors I never had before (and I played PTNB intensely, seriously) started popping up after that initial renown one. Almost as if something broke many of the scripts.