I’m having this problem as well with my RSS feeds.
Tried fred’s solution, but it didn’t seem to work, unless WP is also caching the home page and I need to clear that cache to see the changes.
Figured it out. Had some long URLs associated with tabs so I shortened them with Tiny URL and then made the width of the browser page smaller so that the scroll bar on the right side of the Pages pulldown showed. I was then able to scroll down to the pages that were not showing in the Parent window.
Yes, it’s showing on the front page of the site, but in the editor, the “parent” page stops at the third Longview Media item (KLTV). Nothing below that shows up in the parent pulldown menu in edit.
I would like to have some other way it defaults, rather than to the right. What do you suggest?