advanced stock - error or correct function?

[Tekky_]

Im testing advanced stock and I found strange behavior with deducting items when i place order .

 

I have set 3 warehauses (1, 2, 3). Item is assigned to only 1 and 2. On 1 is 5pcs in stock and on 2 is 3pcs in stock.

When I try to make order i can put to cart all 8pcs (instead of only 5pcs wich are in stock 1) and when I finished order there is on 1 warehause Negative stocks (-3) 

 

Is this normal behavior or error? I need to set that order from shop1 will deduct from warehause1 and orders from shop2 will decuct from wahrehause2.  

 

Pleas do you know hot to set/fix this ?

 

thanks for all feedbacks