[Webkit-unassigned] [Bug 245097] New: WebKit is incorrectly selecting a picture source it does not support

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=245097

            Bug ID: 245097
           Summary: WebKit is incorrectly selecting a picture source it
                    does not support
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: oliver at apple.com

On https://xeiaso.net/talks/how-my-website-works there are a series of picture elements, including avif and webp sources, and a png <img> fallback.

WebKit is providing a broken image icon as it is deciding that no option works, or it is erroneously pulling a source it doesn't support.

The relevant markup is:

<picture style="margin:0"><source type="image/avif" srcset="https://cdn.xeiaso.net/file/christine-static/talks/my-website/001.avif"><source type="image/webp" srcset="https://cdn.xeiaso.net/file/christine-static/talks/my-website/001.webp"><img style="padding:0" loading="lazy" src="https://cdn.xeiaso.net/file/christine-static/talks/my-website/001-smol.png"></picture>

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