[Webkit-unassigned] [Bug 151496] New: AX: aria-owns attribute does not work as expected

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=151496

            Bug ID: 151496
           Summary: AX: aria-owns attribute does not work as expected
    Classification: Unclassified
           Product: WebKit
           Version: Safari 9
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Accessibility
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jondallas at gmail.com
                CC: webkit-bug-importer at group.apple.com

The expectation for aria-owns is that a developer can use it to group controls that are not otherwise grouped in DOM.

Spec for of aria-owns: http://www.w3.org/TR/wai-aria-1.1/#aria-owns

Here is a test case:
    <div role="radiogroup" aria-owns="r1 r2 r3">
       <div role="radio" id="r1">Alpha</div>
       <div role="radio" id="r1">Beta</div>
    </div>
    <!-- this one, too. -->
    <div role="radio" id="r3">Gamma</div>

In this case the 3rd radio button "Gamma" should be included in the radio group. However, when VoiceOver looks at this it only sees two radio buttons in the group, the 3rd is announced as a radio button without a group.

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