Word 2011: Header Formatting Madness
Apparently, this all has to do with a feature called “content controls” that was introduced in Word 2007 for Windows. Evidently, this feature was never introduced in the Mac version of Word, but Word for OS X has to be able to open and display Word documents created in Windows. Since these Word documents can contain such “content controls” but Word for OS X does not have a “content controls” feature, what does the MacBU do? It just pretends that the feature does not exist and displays content controls as regular text.
But of course if you start interacting with such text, you end up encountering issues such as the one I experienced the other day.
