Using Word 2016, I hit the problem "Section break causes an unexpected page break in Word" which is described here: https://support.microsoft.com/en-us/kb/292074
The MS KB says the KB applies through Word 2007. But I found the resolution also applies to Word 2016.
Is there a better way to do my documents to avoid this? Was a total PITA to fight for awhile, and then find that it is a documented issue.