Non-root site path not working

Discussed in #3615

^{Originally posted by michielvdmeulen December 9, 2022}
I'm trying to serve a blog on a non-root path, but despite following the instructions in the documentation I can't get it to work. My situation is identical to that in the docs, apart from different url naming of course, so something like this:

URL:
https://example.com/mysite/

_quarto.yml:

website:
  title: "My Site"
  site-path: "/mysite/"

When I render the site with and without the site-path option and compare the generated index.html file in the _site folder, both are exactly identical - even when I have completely deleted and re-rendered the content. In fact, only the _site\site_libs\quarto-nav\quarto-nav.js file has one line difference:

Apparently, this is either not enough or is not picked up on the server side. I'm using the latest Quarto version (1.2.269).

Does someone have an idea what could be wrong? Any help would be highly appreciated!

[dragonstyle]

Closing in favor of #5267