In this thread on another forum a user complained because the hyperlinks in their documents were not displaying as hyperlinks (blue, underlined).
Here is a link to a sample document.
In examining the document, I discovered that the links were REF fields cross-referencing to headers with a hyperlink switch. The links were formatted in the hyperlink character style and functioned as hyperlinks. However, they display as ordinary text. A
hyperlink to the same heading inserted directly as a hyperlink does have the blue underlined text.
To me, this seems very reasonable, given the different purposes of REF fields and hyperlinks, but I had never read anything about it before or noticed it. I may just be displaying my ignorance.
I've checked Word 2003 and Word 2010. Both behave this way. Again, I expect that it is by design, and that would be a good design. It just caught me off-guard.