Bear in mind I'm new at this. I had a shield I wanted to sell to Brax, but there were no open pedestals. So I found one that had Aging Steak on it. I picked up the steak and dropped it on the floor in front of the pedestal. From where I was standing, I couldn't put the shield on the pedestal, so I moved onto the space in front of it, on top of the Aged Steak I had just dropped. However, I had forgotten that I had autoloot food on, so Brax's Aged Steak immediately went into my bag. That wouldn't have been a problem, except that I already had a stack of Aged Steak in my bag that I had picked up in my adventuring. Brax's steak went into the stack with mine. Not wanting to shoplift the steak, I figured I'd best get it out of my bag. Unfortunately, I am used to other games where stack splitting is done with the shift key. Of course, when I did that, I quick-sold the entire stack to Brax, my steak as well as his own that I hadn't paid for. Interestingly, when I did this, Brax was pacified, and allowed me to leave the shop unmolested.