Side Navigation

Side Navigation

I have noticed that the navigation sidebar panel changes in an undesirable way when you enter sub-pages.

For example, here is my top-level panel:


Now I open a sub-page:


And finally a document library:


Note that all the top level stuff is gone. I understand that the breadcrumb trail can lead the user back, but what is ZOHO's philosophy for hiding the other levels in the panel? I do not agree with this. I'd like to see all the levels, however deep I get into the wiki.