24 - profession bag and multiple sells

What steps will reproduce the problem?
1. equip a profession bags just after the backpack
2. fill the backpack 16slots
3. try to sell multiple stacks of an item not related to the profession bags

What is the expected output? What do you see instead?
auctionlite can't (for obvious reason) unstack and sells the item because it tries to unstack in a profession bag slot an item who is incompatible with it.