The location option on the about:preferences#privacy pane is confusing to users. We should probably hide it and look over remaining items that should be hidden. See: https://blog.torproject.org/comment/277013#comment-277013 for a report on our blog.
@jag This is one for the future, so don't worry about it atm. I'm considering this task to be a UX companion piece to #40656, essentially, although the scope is a little wider.
The thread references this article in German (which seems to be an unofficial site that covers Mozilla-related only news in German, but I opened it with the translator, as I'm not a German speaker).
However, the article also links this repository, which seems to be an official thing of the Moz UX team, even though it's made with very fancy and new technologies, so I guess it's for demoing purposes.
Thanks for the links! This update does seem to be official considering the repository, and it's a great improvement in many ways, including findability.