[Webkit-unassigned] [Bug 259752] New: Nested @supports queries do not inherit parent declarations

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=259752

            Bug ID: 259752
           Summary: Nested @supports queries do not inherit parent
                    declarations
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Mac (Intel)
                OS: macOS 13
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: daniel at danieljwilson.me

As of Safari Technology Preview 175 (Safari 17.0, WebKit 18617.1.1.2), nested @supports rules are not applied consistent with implementations in Blink and Gecko. In the Codepen linked below, the border color declaration is overridden by the color value specified in the @supports rules and the border-radius rule in the parent selector is completely ignored.

https://codepen.io/Membranophonist/pen/rNQPYXe

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