Please see this Issue:  https://gitlab.com/inkscape/inkscape-web/issues/396

Despite noble efforts from Martin, this feature seems to be a bit stubborn.  That's why I called it "small(ish)".  It must be bigger than I thought.

Let me know if anyone has any questions.  Martin (or Mihaela or jabiertxof) could give details of the kind of code which the forum uses.  I think is Django, but not positive.

Thanks!