Using a Web Application on a fortigate via jump issues a CORS error and does not work

[Atroskelis]

Expected behavior:

Web App on fortigate mgmt should open mgmt

Current behavior:

Errors in console :

Access to manifest at 'https://:6060/web/launch/.?path=%2Ffavicon%2Fsite.webmanifest' (redirected from 'https://.:6060/favicon/site.webmanifest')

from origin 'https://.:6060' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

It seems that it tries from firewall.teleport.example.com to access something teleport.example.com

Bug details:

• Teleport version - 15.4.9
• Recreation steps
• Debug logs

I've tried using many variants of rewrite but nothing works

    headers:
    - "Origin: https://<frw>.<hq-teleport>" # Teleport application subdomain prepended with "https://"
    - "Host: <frw>.<hq-teleport>" # Teleport application subdomain itself
    redirect:
    - "<frw>.<hq-teleport>:6060"

Any feedback is appreciated.