[Webkit-unassigned] [Bug 264891] New: AX: Voiceover does not announce information of element referenced in aria-activedescendant attribute on input with role combobox

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=264891

            Bug ID: 264891
           Summary: AX: Voiceover does not announce information of element
                    referenced in aria-activedescendant attribute on input
                    with role combobox
           Product: WebKit
           Version: Safari 17
          Hardware: Mac (Intel)
                OS: macOS 14
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Accessibility
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jartik at gmail.com
                CC: andresg_22 at apple.com,
                    webkit-bug-importer at group.apple.com

Overview:
Voiceover does not announce list aria-label, number of list items, individual item name and position in list when selected via arrow down/arrow up keys.

Steps to Reproduce:
Reproduced with official W3C examples of combobox autocomplete:
https://www.w3.org/WAI/ARIA/apg/patterns/combobox/examples/combobox-autocomplete-list/
https://www.w3.org/WAI/ARIA/apg/patterns/combobox/examples/combobox-autocomplete-both/

Open combobox list using mouse or keyboard and select any item using arrow down/arrow up keys


Actual Results:
1) For https://www.w3.org/WAI/ARIA/apg/patterns/combobox/examples/combobox-autocomplete-list/ example - only expanded state announced on open, list item information is not announced.
2) For https://www.w3.org/WAI/ARIA/apg/patterns/combobox/examples/combobox-autocomplete-both/ example - expanded state announced on open and then input element value changes after item selection via arrow keys, list item information is not announced.

Expected Results: When first list item selected, list aria-label should be announced, then total number of items in list, then item name and item position in list (e.g. 3 of 5). For subsequent item selections via arrow keys - item name and position in list. Such behavior implemented in NVDA and JAWS screen readers.

Build Date & Hardware: Safari 17.1 (19616.2.9.11.7) Mac OS Sonoma 14.1.1 (also reproduced on MacOS Ventura 13.6.1 with Safari 17.1)

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