[Webkit-unassigned] [Bug 233916] New: Safari Bug "no-cache" network error

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=233916

            Bug ID: 233916
           Summary: Safari Bug "no-cache" network error
           Product: WebKit
           Version: Safari 15
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Service Workers
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: janos.wartig at icloud.com

A fetch request on the page that sets the cache: "no-cache" will result in a network error when it is fetched by a Service Worker.
The error that is thrown looks like this:
TypeError: Request header field Cache-Control is not allowed by Access-Control-Allow-Headers

I implemented a simple test page that reproduces the issue here: https://testjanos.app.baqend.com/
The test page registers a simple Service Worker which listens to fetch requests and tries to fetch them.
It also includes the following script tag:
        <script>
      let options = { method: "POST", cache: "no-cache", mode: "cors", body: '{"weather":true}' };
          fetch("https://dcinfos-cache.abtasty.com/v1/geoip", options);
        </script>

Ways to reproduce:
1. Go to https://testjanos.app.baqend.com/
2. Open Service Workers view (Developer -> Service Workers)
3. Refresh the page
4. Observe that resource https://dcinfos-cache.abtasty.com/v1/geoip could not be fetched due to above error (error prited to the Service Worker console)

Is there any fix for this issue?

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