First and foremost, I want to publicly thank @DavidMStraub for his help in debugging my Gramps / Grampsweb installation. I don’t know how this compares with other users, but my integrated tree is up to 21,877 people (yes, I see dead people) [Happy @emyoulation ? I gave the citation for the pop culture reference!]. Regardless, David, if you are in the Washington DC area, I owe you a home cooked meal. And a six pack.
That being I am uncertain if this is a bug or an enhancement, but grampsweb seems to have an issue with relatives by marriage. My father had one brother who was married to my Aunt – if I set myself as the home person, and open the entry for her, she is listed as “No relation”, when she ought to be “Aunt” (Preferably “Aunt by Marriage” to reflect the correct nature of the relationship).