Despite the e-mail I received that Rumblesoft, Inc.'s tech support people are all attending the Jamboree, I received another e-mail this morning informing me that the issue I reported has not been reported by anyone else. It also requested a copy of my GEDCOM file for testing purposes.
For being gone to Jamboree, that's a reasonably quick response. I did expect to wait until they returned next week, reasonably. I have sent them a copy of the GEDCOM file in question, and will let you know what answers I get.
Unitl then, enjoy the Jamboree, Rumblesoft!