Odd published result of cross-reference format conversion

Hello. Here is a strange problem ...

I am using FM 2015 in a Win 10 environment.

My document uses cross-reference formats that sometimes include a page number variable.

This cross-reference setup:

<Hyperlink>Figure\ <$paranumonly> on page\ <$pagenum><Default Para Font>

produces this cross-reference in the .fm file:

For online help, I want only the figure number with no page number. In the Publish Settings/Style Mapping options, I select <$paranum> only:

The result consistently appends empty spaces to the link. I can't figure out where they are coming from. (This problem does not occur when I convert my HeadingPage formats, which follow almost the exact same pattern.)

I would think the spaces come from the spaces in the cross-reference format (like the space between "on" and "page") but, as I say, the same result does not occur with my HeadingPage conversion.

All suggestions welcome. I'll simply create parallel xrefs and put conditions on them for the different outputs, if I must, but the conversion settings are so much easier when they work ...