When adding additional products to a Field Service, stock quantities are not considered, this means I can take more stock than the available quantity (after Marking the service as Done, stock is not reduced). If I add less material than the available stock, then it is reduced from the inventory when marking the Service as Done. If I add several products using less stock than available and several products using more stock than the available, when marking the Service as Done,  only the first products reduce the inventory, for the products I tried to consume more than the available stock the stock is not affected.
My products are not "consumables", they are configured as "storable products" and can be sold and can be bought.
Am I doing something wrong?