[Webkit-unassigned] [Bug 228573] New: AX: Safari/VoiceOver: Table headers aria-describedby isn't announced by VoiceOver

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=228573

            Bug ID: 228573
           Summary: AX: Safari/VoiceOver: Table headers aria-describedby
                    isn't announced by VoiceOver
           Product: WebKit
           Version: Safari 14
          Hardware: iPhone / iPad
                OS: iOS 14
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Accessibility
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: danilu at adobe.com
                CC: andresg_22 at apple.com,
                    webkit-bug-importer at group.apple.com

In iOS 14.7.1, content associated with a table header via aria-describedby are not being announced by VoiceOver. Tapping on the column header or navigating to the header via swipe operations result in VoiceOver announcing the text of the column, the column/row index, etc but just not the aria-describedby content. 

See https://xyi4e.csb.app/ to reproduce:
Repro Steps:
1. Turn on VoiceOver and navigate to the link in Safari in you iPhone/iPad.
2. Navigate to the "Date" column header via tapping on it or swipe commands.
3. Note that VoiceOver doesn't announce "test description" even though that div is associated with the header via aria-describedby.

Note: This works on macOS 14 + VoiceOver + Safari 14

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