Okay, so if you have not published your website then you will have the preview option in your dropdown list choice.
However, I have just tried that on a simple tutorial from Wix and yes I get the same result, that the page does not fully work using this preview option.
Although, note that you are just viewing a saved version of your website through this option and it probably doesn’t give you a complete preview that you get by using the preview from within the editor itself which is an emulator and will show you how your site will look like when tested.
If it works in that preview then the website should work fine when you have published it too.
@brett-haralson
Is there a reason why this preview option for an unpublished site doesn’t work the same as the actual emulator preview from within the editor itself, or is it that it was designed to just be a simple preview and not have the full capabilities of the preview from within the editor itself.