By default, when you enable the Preview Mode on the Whatfix Studio, you can preview or test Whatfix Content and Widgets that are only in the Ready Stage.
Additionally, Whatfix enables you to test Advanced Customization code changes with Preview extension, and you see the following options:

For more information, refer to Use Preview Extension to Test Whatfix Content
If the content you want to preview is in the Draft stage, then select the Include Draft content and widgets. checkbox.
