Yes. The items that I have set to "Track inventory by product attributes" are the ones I am having issues with. If the default selection is out of stock, the customer may see that and not realize other sizes are available. They also do not have the "notify when back in stock option" if they select a combination that is currently out of stock - that only shows when "Track inventory" is selected. And with product ribbons (plugin), if all options are out of stock, the ribbon still will not show because it is based on the "Product Quantity" (when "Track Inventory" is selected).