Public link with Nginx/CloudFront get 403

[Ben Rieger]

I'm trying to map public links path to a shorter path.
I'm using a Nginx reverse proxy.
The same happens with CloudFront.

This is the configuration:

---

server {
  listen 80;

  location /  {
    proxy_pass https://my-domain.atlassian.net/;
    proxy_http_version 1.1;
  }
  location /testdoc {
    proxy_pass https://my-domain.atlassian.net/wiki/external/SOME_PUBLIC_LINK_ID;          proxy_http_version 1.1;
  }
}

---

When I go to localhost:80/wiki/external/SOME_PUBLIC_LINK_ID everything works but when I go to localhost:80/testdoc I get the error "We couldn't find what you're looking for".
I can see that one of the requests to /cgraphql "internalFrontendResource" get 403.