Hey,
The Shop page does not want to load anything other then the default template. I have 1 custom page template that I use for all of the Woocommerce pages called "product template", and I know it is working because it correctly loads "product template" on the shortcode pages(cart, checkout, etc).
This was working correct before today, and I haven't made any changes to the code since. Does anybody know why the product-archive, product-category, and the single item page is not loading the selected template that I have specified under the Page Attributes module on the dashboard.