Why can I no longer sort hotels by ranking
I see if you search Mt. Vernon hotels in the drop down box on the Mt. Vernon forum you get such a vast grouping of hotels that could serve the Mt. Vernon area visitor. Accommodations in Washington,DC, Springfield, Va, Alexandria's Old Town, Ft. Belvoir. An enormous range that may be difficult to compare to each other.
There may be other areas with the same situation but the ones I checked have the usual Ranker-Value-Prices-Distance options to click on.
So you might take a look at the Alexandria forum and see how that does for you.
I do hope you had a look at the TA Support Forum, as you can see there were numerous glitches on different TA Sites, I also ended up with issues on TA sites.
There is also TripAdvisor General Support site to report problems, including using a Mobile App or Site.
This is indeed interesting. I see the same hotels...and also checked on restaurants out of growing curiosity...in the Alexandria listings. Hotels and restaurants can be ranked in the Alexandria forum...but, while rated, they don't seem to be able to be ordered by ranking in the Mt. Vernon forum.
Guessing it could have something to do with Mt. Vernon being actually an unincorporated community....not even an unincorporated town. We lived there several years ago for several years. We would refer to the "Mt. Vernon area", but not that one lived in Mt. Vernon. One lived in Alexandria, Va. Perhaps close to Old Town, or the Fairfax Co part of Alexandria, or Southern Alexandria, or "near the Parkway" kind of thing. The postal address was always Alexandria, Va.