I am attempting to create a custom product details page for a project. After I created the new page type (using PageTypeBuilder) and page template, I deployed it to my environment. But, I am unable to select it in the "Commerce Settings" tab. Every time I do, the "Save Successful" message is displayed, but the "Product detail page type" combo box is cleared out.
However, I can change the existing "[Commerce] Product page" to use my newly-created page template for display and I am able to select it in the "Product detail page type" combo box successfully.
Are you required to use a particular page type when creating a new, custom Product Detail page? Is this configurable?
Did you create new page type in Commerce Sample project or different project?