I see that the search returns only one topic when using only the tag (without the subway keyword) in the search (it’s not the topic posted in the OP):
https://urbantech-forum.cornelltech.io/search?expanded=true&q=tags%3Anew-york-city-🇺🇸
It also works with other keywords (but only for that topic returned previously):
If I don’t use tags it returns correctly:
https://urbantech-forum.cornelltech.io/search?expanded=true&q=new-york-city-🇺🇸
The topic returned previously, with the tag, is the 1st returned using a keyword with the tag name, but the post is another (but it might just be because of (maybe) a metadata or something like this in the post that is caught by the search, and not the tag itself, but I can’t say for sure).