[Webkit-unassigned] [Bug 232402] New: :empty selector matches elements with a shadow root

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=232402

            Bug ID: 232402
           Summary: :empty selector matches elements with a shadow root
           Product: WebKit
           Version: Safari 15
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: luke at warlow.dev

Steps to reproduce:

Go to https://jsfiddle.net/hyjfkwqx/
You should see there is no output.

Actual results:

The :empty selector matches an element with an open shadow root that itself has child elements. So the parent div is not displayed.

Expected results:

I would expect the :empty selector to not match these elements. So I would expect to see a red square with a smaller blue square in it.

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