NEW319558
AX: aria-describedby fails on VoiceOver except for particular roles 
https://bugs.webkit.org/show_bug.cgi?id=319558
Summary AX: aria-describedby fails on VoiceOver except for particular roles
Jake Archibald
Reported 2026-07-16 01:20:21 PDT
```html <div tabindex="0" aria-describedby="foo">…</div> <div id="foo" style="display:none">Description</div> ``` I expected the above to work, as in VoiceOver reads the description when the element has focus. However, it isn't read. If I give the focusable element a role of link, button, or img, it works. In Chrome it works without one of these roles. It feels like the Chrome behaviour is correct. I encountered this when trying to make a hover point for a tooltip, where it doesn't make sense for the hover point to be a button/link/img.
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Radar WebKit Bug Importer
Comment 1 2026-07-16 01:20:26 PDT
<rdar://problem/182386824>
Jake Archibald
Comment 2 2026-07-16 01:21:55 PDT
Firefox has the same issue https://bugzilla.mozilla.org/show_bug.cgi?id=2055267
Radar WebKit Bug Importer
Comment 3 2026-07-16 01:22:00 PDT
<rdar://problem/182386811>
Jake Archibald
Comment 4 2026-07-16 04:24:33 PDT
https://bugzilla.mozilla.org/show_bug.cgi?id=2055267#c5 - it seems like an absent AXDescription causes VO to ignore the AXCustomContent. Maybe this is something worth fixing in VO?
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