When you generate via the dialogs (i.e. double-clicking the
Single Source Layout) note that one of the pages has an option
labeled "Show navigation pane link in topics".
I have a super silly and obvious question here. You do
realize that the only time you should see the link is when you open
a topic directly, right? Meaning that perhaps you saved a favorite
pointing to just that topic with no TOC or navigation in sight.