[Webkit-unassigned] [Bug 220054] New: AX: aria-busy is not being cleared from an element for VoiceOver

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=220054

            Bug ID: 220054
           Summary: AX: aria-busy is not being cleared from an element for
                    VoiceOver
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Accessibility
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mzehe at mozilla.com
                CC: webkit-bug-importer at group.apple.com

Steps:
1. With VoiceOver on, open this test case:
data:text/html,<div id="live" aria-live="polite" aria-busy="true"></div><script>setTimeout(() => live.textContent = 'updated', 1000); setTimeout(() => live.removeAttribute('aria-busy'), 2000);</script>
2. Explore the only div in the document.

Expected: VoiceOver should speak the text "updated" after two seconds. It should then treat the div as normal.
Actual result: VoiceOver speaks "updated" already after 1 second, and then speaks "website group is busy" when exploring the web contents with VoiceOver navigation commands.

This is the case in both Safari 14 as well as Technology Preview 117.

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