166714 2017-01-04 21:28:00 -0800 AX: (iOS only) Some programmatic DOM changes are not noticed by VoiceOver 2025-11-20 15:35:08 -0800 1 1 1 Unclassified WebKit Accessibility Safari 10 iPhone / iPad iOS 10 NEW InRadar P2 Normal --- 1 jonathan webkit-unassigned balrajsjohal jcraig kdunagan webkit-bug-importer oldest_to_newest 1264007 0 jonathan 2017-01-04 21:28:00 -0800 If the DOM is programmatically changed, these changes are not picked up by VoiceOver. Example Code: ===================== <div id = "item1">item 1 (not hidden)</div> <div id = "item2" aria-hidden="true">item 2 (hidden via HTML)</div> <div id = "item3">item 3 (hidden via JS after 2s)</div> <div id = "item4">item 4 (not hidden)</div> <script> function changeHidden() { document.getElementById("item3").setAttribute("aria-hidden", "true"); } window.setTimeout(changeHidden, 4000); </script> ===================== After 4 seconds, item3 should no longer be navigable via swiping left/right in voice over because it is set to aria-hidden=true. However it still is. Some actions like double-tapping will get it to be properly hidden from navigation. Likewise, simply changing innerHTML may have the same result: ===================== <div id = "item1">item 1 (not hidden)</div> <div id = "output"></div> <script> function changeOutput() { output.innerHTML = "changed"; } window.setTimeout(changeOutput, 2000); </script> ===================== VO does not see the output div. This affects dynamic sites, like those generated by Tumult Hype. I am reproducing on iPad Pro with iOS 10.2.1 via: 1. Enabling VoiceOver 2. Swiping to the right 1264008 1 webkit-bug-importer 2017-01-04 21:28:12 -0800 <rdar://problem/29877887> 1264031 2 298071 jcraig 2017-01-05 00:06:23 -0800 Created attachment 298071 test case 1264032 3 jcraig 2017-01-05 00:10:22 -0800 I can reproduce in iOS. Behavior is correct in macOS. 1629335 4 kdunagan 2020-03-12 13:30:23 -0700 Is there any movement on this issue? We've been experiencing this issue on IOS 10+ 2160394 5 balrajsjohal 2025-11-20 15:35:08 -0800 Hey, is this issue planned to be addressed soon? We can reproduce on the latest version of iOS 18 which is a significant amount of our userbase 298071 2017-01-05 00:06:23 -0800 2017-01-05 00:06:23 -0800 test case wk166714.html text/html 560 jcraig PCEtLSBleGFtcGxlIDEgLS0+Cgo8ZGl2IGlkID0gIml0ZW0xIj5pdGVtIDEgKG5vdCBoaWRkZW4p PC9kaXY+CjxkaXYgaWQgPSAiaXRlbTIiIGFyaWEtaGlkZGVuPSJ0cnVlIj5pdGVtIDIgKGhpZGRl biB2aWEgSFRNTCk8L2Rpdj4KPGRpdiBpZCA9ICJpdGVtMyI+aXRlbSAzIChoaWRkZW4gdmlhIEpT IGFmdGVyIDRzKTwvZGl2Pgo8ZGl2IGlkID0gIml0ZW00Ij5pdGVtIDQgKG5vdCBoaWRkZW4pPC9k aXY+Cgo8c2NyaXB0PgoKZnVuY3Rpb24gY2hhbmdlSGlkZGVuKCkgewoJZG9jdW1lbnQuZ2V0RWxl bWVudEJ5SWQoIml0ZW0zIikuc2V0QXR0cmlidXRlKCJhcmlhLWhpZGRlbiIsICJ0cnVlIik7Cn0g Cgp3aW5kb3cuc2V0VGltZW91dChjaGFuZ2VIaWRkZW4sIDQwMDApOwoKPC9zY3JpcHQ+CgoKPCEt LSBwYXJ0IDIgLS0+Cgo8ZGl2IGlkID0gIm91dHB1dCI+PC9kaXY+Cgo8c2NyaXB0PgoKZnVuY3Rp b24gY2hhbmdlT3V0cHV0KCkgewoJb3V0cHV0LmlubmVySFRNTCA9ICJjaGFuZ2VkIjsKfSAKCndp bmRvdy5zZXRUaW1lb3V0KGNoYW5nZU91dHB1dCwgNDAwMCk7Cgo8L3NjcmlwdD4=