Thanks for the feedback. I am starting out new pages by writing in them, not copy/paste. Any page I create and enter text in, whether with the nwiki or html editor, has the problem: I save it, and it displays fine. However, the link to it from another page always displays a question mark after it, and when clicked, it goes to the linked page, with all the saved content, but displayed in edit mode.
This is on the latest 1.9..