I just bought a Lovely Strawberry Soft-Serve to feed to my pet for Major Drills, but it wouldn't show up in my inventory. I ctrl+f'd and everything. I bought another and another, but nothing. Finally, I turned off 'sort of categories' in my inventory, ctrl+f'd again and there it was, all five I'd bought. Fed it to my pet, all is fine.

But it does mean that it doesn't show up if you have your inventory in categories. Which is a pretty big deal. Just thought I'd mention it. (I assume this is the right spot?)