"Authorization" Header propagation with Hot Chocolate and nswag API Client not working

Very strange issue on a C# project with few important things.

• Hot Chocolate for GraphQL
• Header propagation for forwarding the HTTP Headers to API's
• nswag generated API Clients

I followed the whole tutorial here: https://craftbakery.dev/http-header-propagation-aspnet-core/

And doesnt matter that I do:

services.AddHttpClient<IClient, Client>(    c =>    {        c.DefaultRequestHeaders.Add("Omg", "what the ...");        c.DefaultRequestHeaders.Add("Accept-Language", "english");        c.DefaultRequestHeaders.Add("Authorization", "Okay");    });

The target method is like in the guide.

[HttpGet]public IHeaderDictionary Get(){    // Return all headers API received.    return Request.Headers;}

But the real output then is on direct call:

{"Omg": ["what the ..."],"Accept-Language": ["english"],"Authorization": ["Okay"]}

And when I try it via the sample project (which uses the nswag generated API Client).

{"Omg": ["what the ..."],"Accept-Language": ["english"]}

I searched in the whole project for Authorization because I tought it could be removed somehow. But must be in that "in between layer".

Some ideas what the issue could be?