Power Draw skill = 0 in Companions overview (details page)

[tos1]

Clicking each line of Companions overview (local trade menu in towns) shows that Power Draw skill is always zero for anyone.

- How to reproduce it/when/why it happens:
Hire at least one companion, check her/his Power Draw skill is 1 or greater (by asking her/him from party list), visit a town, select "Trade with locals", select "Companions overview", and select the companion from the list. Check the Power Draw skill. It's always displayed as 0.

- Game version (and steam or downloaded):
AWoIaF v8.2, Warband v1.174 downloaded
(Note: v8.1 + WB v1.167 has the same problem. v7.11 + WB v1.167 has no problem)

(Edited on Feb 5 2023 UTC: corrected WB versions)