Ok, here's a little bit more information on the problem.
I looked at the XML for one of the Text fields with which I'm having trouble. I found this for a font specification:
<font use="#f2" typeface="Arial"/>
I commented that line out and replaced it with this:
<font size="5.8pt" typeface="Times New Roman"/>
and the field displayed properly.
My question is refned to this: I set the typeface and size for the Text fields in the Font toolbar at the top of the screen. It's even set correctly if I display the Font paragraph. I can't find anywhere else where typeface and size is set. How and why are the typeface and size that I selected being overridden?