When you’re working with your blog in WordPress admin and you preview your saved draft (or a published recipe) the system print dialog won’t popup when you click the print button on the recipe.
When you click the print button on the recipe, you’ll get the print page but the print dialog (“Select printer” etc) won’t pop up.
That’s so you can click on the recipe (on the print page) and use Live Formatting.
To test your print, log out of admin, load the page and click print. It will open the print page and also open the print dialog box.