Bug 239803 – AX: VoiceOver does not announce count for li tag or ARIA listitem (with ARIA tablist).

• Status: NEW
• Component: Accessibility

[sejeong]

VoiceOver does not announce count for li tag or  ARIA listitem.

In iOS Safari, the li tag or ARIA listitem announces:
First list announces of "list start".
Last list announces of "list end".
Does not announce  "in list of X item".

1. Go to https://codepen.io/sejoung/pen/QWaeLVW
2. Start VoiceOver
3. Use the flicking to move focus to the first ARIA listitem instance
4. Observe how the label spec'd via the role or tags is not announced by VoiceOver
5. Move focus to the next item
6. Observe how the label spec'd via the role or tags is not announced by VoiceOver

VoiceOver should be announce "in list of X item" at the ending of listitem.
I found the same issue in the ARIA tablist.
Validation is difficult due to changing policies.
If any release notes exist, Please sharing.
Thanks in Advance

[Radar WebKit Bug Importer]

<rdar://problem/92380447>