Negative values in the "Companion Overview" at towns

[tos1]

About the "to next lvl" column in the "Companion Overview", some lines have minus sign (negative value) and they seem to be sign-inverted value of the current experience.

(Edited to add Princess Khiarai later, Mar 22 2023 UTC)
Companions who have negative value (as far as I know):
- Syrio Forel, Ser Barristan Selmy, Brienne of Tarth, Thoros of Myr, Ser Shadrich the Mad Mouse, Princess Khiarai

Some of above are of v8.1, and Kurleket has no problem at v8.1 AFAIK. I have not tested Wun-Wun, Dongo, each of Matters, each of Sands, Son, Daughter and Sam at v8.*.

The problem may be inherited from Brytenwalda or other upstream MODs. I saw the minus sign while playing Brytenwalda.

- How to reproduce it/when/why it happens:
Hire companions, Visit a town, select "Trade with locals", select "Companions overview", and see the column "to next lvl".

- Game version (and steam or downloaded):
AWoIaF v8.2, Warband v1.174 downloaded
or
AWoIaF v8.1, Warband v1.167 downloaded