Dear Xara...

Bug - The Help information about website navigation is wrong.:
You can navigate through the pages of your website using the navigation 'arrow' buttons at the top of the preview window, and click the 'home' button on the left to return to the page that was initially viewed in the preview.
The arrows are for access to the Next/Previous pages in the History List; nothing to do with the website preview whatsoever.

Acorn

P.S. There is a long-outstanding request to allow the system default browser to act as the Preview screen...