I am back, with screenshots!
I do not think this is an issue with Kingmaker or Rise of the Runelords alone.
Here is what I see as GM:
Attachment 18992
Here is what my players see:
Attachment 18993
Several basic items from the Core Rulebook and APG are listen as unidentified items in the item list. I do not think this is intended, nor is it especially helpful if you want a player to grab a horse, torch or shovel to add to their sheet. This could easily be resolved by tagging non-magical items as IDed Items by default.