Thank you for responding.
We already had the "List pages if no page selected" set to off.
"check if there is an influence on possible page structures alike a listing IN a page with page links"
We do have pages with links, but the links are not to any of the same pages as content in other books,
We have a total of 8 books, with as many as 20 chapters per book, so with every book, chapter and page listed, it makes for quite a bit of confusion to any guest that would see this page.