[Webkit-unassigned] [Bug 258655] New: Safari TP 173 cannot show JEPG XL placed to the top of https://jpegxl.info

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=258655

            Bug ID: 258655
           Summary: Safari TP 173 cannot show JEPG XL placed to the top of
                    https://jpegxl.info
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: macOS 13
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Images
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: tetsuharu.ohzeki at gmail.com
                CC: sabouhallawa at apple.com

## Environment
- macOS 13.4.1（22F82）, Intel
- Safari TP 173 (Safari 17.0, WebKit 18616.1.20.2)


## Steps to Reproduce

1. Open https://jpegxl.info


## Actual Behavior

- "JPEG XL logo / browser support test" image is not shown.
    - Safari fails to decode?
- But the fallback image is also not shown.
- By Network Tab in Web Inspector, Safari downloaded https://jpegxl.info/logo.jxl.
    - The request was sent with `Accept: image/webp,image/avif,image/jxl,image/heic,image/heic-sequence,video/*;q=0.8,image/png,image/svg+xml,image/*;q=0.8,*/*;q=0.5` header.

## Expected Behavior

Show "JPEG XL logo / browser support test" image properly with JPEG XL.

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