Inventory product quantity not decreasing when ordering from second store
I am having an issue with the inventory quantity not decreasing when ordering from a second store. The magento version I'm currently using is magento 2.05.
We wanted to have 2 stores with different domain names using one magento installation.The only thing that should be different is the appearance and the menu. However, when ordering products from both stores only the main store decreases the product quantity in the products catalog.
So let's say for example I have the main store called www.store1.com and the secondary store, which is an addon domain, called www.store2.com. Only products ordered from www.store1.com decreases the catalog inventory, but www.store2.com is still able to place an order. It just doesn't decrease the quantity of the product in the inventory. Manage stock is set to "Yes" in the "Product Stock Options" so I don't really know what could be the issue. I did install 2 themes, but as far as I know they don't mess around with any of the magento functionality.
I am still pretty new to magento so any help would be much appreciated!