Ran back to terinyo starving after my food inventory disappeared (which is a bug so common I hardly needed to report it in my last thread), Grabbed up the first standard ration I could get to and ate it before paying, at which point a voice in my head said "I'll just add the total of ten GP to your tab". Paid my 10GP tab and left, but upon returning found that I always owed 10 GP in the shop in addition to my tab for anything I pick up, meaning I have to pay for that standard ration every time I enter the shop. If I enter the shop with less than 10 gold I will be unable to leave.