Could you display the number of items crafted if it isn't 1? For example, Engineering's Gold Power Core creates 3 Cores, but that isn't displayed in Skillet's window. It is displayed in the basic Blizz UI, if you can make that graphic carry through to Skillet.
Skimmed through this thread and I didn't see any further mention of this poster's question or a fix. As an engineer, I've also noticed the same problem here. Another example item is Aquadynamic Fish Attractor. As he mentioned, with the default UI and ATSW, they show "3" on the icon to indicate a quantity of 3 will be crafted per each individual set of mats (ie: queue up 2, and you'll effectively end up with 6 of the item, and so on). Skillet doesn't seem to indicate this anywhere, just showing a bare icon for the item. So, if you forget how many would actually be created, just looking at the icon, you'd think only one would result (apologies if this has already been corrected - not at home right now to check). ;)
I've also seen issues with retrieving items from the bank from the shopping list window in conjunction with OneBag, where clicking retrieve ends up with just a "That bag is full" message (or something along those lines). From what I gather, this one's already logged to be fixed, and is a problem regardless of which/any inventory addons running?