I have created my new topic and added a new popup in my
topic. I generate my winhelp, open my help project, go to topic,
click popup and my popup window displays but you can only see the
title of the popup not the description.
I seem to recall from vague and distant WinHelp memory that
it's happening to you because the topic is formatted with a
non-scrolling region (NSR). If my memory is correct, the answer is
that you need to remove the NSR from the offending topic.