Style sheet not loading

Since a few hours ago, I get this error loading style sheet for the Rocky forum (discourse):

The resource from “” was blocked due to MIME type mismatch (X-Content-Type-Options: nosniff).

Maybe someone changed the rules for loading the mime type?

Nope, more likely your local browser has an issue. Site working fine for me as always.

When I make a request to that url, I see these two headers

content-type: application/octet-stream
x-content-type-options: nosniff

Yes, I have also, but that is not causing any issues.