I don't have Word 2013 yet, so I can't test.
But you got me wondering if they finally might have fixed that bug and now correctly process HTML for in-text citations. You can test yourself by changing one of the format strings from
<format>{%RefOrder%}</format>
to
<format>{<sup>%RefOrder%</sup>}</format>
But you got me wondering if they finally might have fixed that bug and now correctly process HTML for in-text citations. You can test yourself by changing one of the format strings from
<format>{%RefOrder%}</format>
to
<format>{<sup>%RefOrder%</sup>}</format>