Registered on the forums to report similar issues apparently related to the steam patch. I'm playing Native without any mods.
In my old savegame (about 250 days in) gloves and boots have completely disappeared from the armour merchant stock. New games seem to not be affected by this but the availability of trade goods is. Didn't obverse a bug with town/village - upgrades as my character has not yet acquired any fiefs but noticed that the description of cities seems to stay at "opulent and crowded..." regardless of sieges, conquests etc.