title: Woocommerce custom Product Type doesn't display on page reload
body: <p>I have added a woocommerce custom product type. I have also defined custom tab and its contents. I am able to save all the data using <code>update_post_meta</code> and publish button. But the Product Type drop down always shows <code>Simple Product</code> when the page reloads (though my saved data is intact). This is not the case, if I save the product type as the woo commerce defaults (Simple, Variation etc.)</p>