I use the Concordance Tool a ton for non-biblical resources (regular books) to get an overview of the contents, references, and citations of the book. I frequently notice that some books display page numbers in the Concordance Tool while others do not. There seems to be no rhyme or reason as to which will display page numbers and which don't.

What causes this phenomenon? Can this be fixed? The Concordance Tool is infinitely less helpful (almost useless) for regular books without the page numbers because it requires you to click on each reference to know where it shows up in the book.