CORS problems now with HTTP2 -- CORS catch 23

We have a problem it seems with CORS for w3.org’s public data.
It seems


Ccing the public TAG list as maybe this will need updfating of tag documents about CORS.


A script on localhost:3080 does a fetch to ttp://www.w3.org/1999/02/22-rdf-syntax-ns and is refused by the browser.
The system cannot respoind to the OPTIONS with a redirect





Request URL: http://www.w3.org/1999/02/22-rdf-syntax-ns
Request Method: OPTIONS
Status Code: 307 Internal Redirect
Referrer Policy: no-referrer-when-downgrade
Response Headers
Access-Control-Allow-Credentials: true
Access-Control-Allow-Origin: http://localhost:3080
Location: https://www.w3.org/1999/02/22-rdf-syntax-ns
Non-Authoritative-Reason: HSTS
Request Headers
Provisional headers are shown
Referer: http://localhost:3080/devel/github.com/solid/form-playground/playground.html
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36


->

Access to fetch at 'http://www.w3.org/1999/02/22-rdf-syntax-ns' from origin 'http://localhost:3080' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: Redirect is not allowed for a preflight request.