317597 2026-06-22 11:13:29 -0700 AX: VoiceOver does not re-resolve aria-labelledby when referenced element's accessible name is provided by aria-label 2026-07-01 13:31:54 -0700 1 1 1 Unclassified WebKit Accessibility WebKit Nightly Build All All RESOLVED FIXED InRadar P2 Normal --- 1 sarahjane_ward tyler_w andresg_22 sarahjane_ward webkit-bug-importer oldest_to_newest 2222808 0 480179 sarahjane_ward 2026-06-22 11:13:29 -0700 Created attachment 480179 Simple test case Summary: VoiceOver reads stale aria-labelledby value when referenced element's name comes from aria-label Description: When an element uses aria-labelledby to reference another element, and the referenced element's accessible name is provided via aria-label, VoiceOver caches the initial resolved value and does not update it on subsequent navigations. The same pattern works correctly when the referenced element derives its name from text content. Steps to reproduce: 1. Open the attached test case in Safari 2. Enable VoiceOver (Cmd+F5) 3. Navigate to "Section B" using VO+Right Arrow — note the count value announced 4. Navigate past the "Focusable element" link below Section B 5. Wait a few seconds for the counter to increment 6. Navigate back up to "Section B" using VO+Left Arrow 7. Repeat steps 4-6 for "Section A" to compare Actual results: Section A (referenced element uses textContent) announces the current count on every navigation. Section B (referenced element uses aria-label) announces the value from page load and never updates. Expected results: Both sections should announce the current count value. The Accessible Name and Description Computation spec (AccName 1.2) defines aria-labelledby resolution as a recursive computation of the referenced element's accessible name, which includes aria-label. The spec does not distinguish between name sources. Build date and hardware: macOS 26.5.1, Safari 26.5 Test case: <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>aria-labelledby resolution test</title> </head> <body> <h1>aria-labelledby resolution test</h1> <p>Two sections update a counter every second. Navigate away and back with VoiceOver.</p> <h2>Section A — textContent on referenced element</h2> <section aria-labelledby="text-ref"> <p id="text-ref">Count: 0</p> </section> <p><a href="#">Focusable element</a></p> <h2>Section B — aria-label on referenced element</h2> <section aria-labelledby="aria-ref"> <p id="aria-ref" role="img" aria-label="Count: 0">Visual content</p> </section> <p><a href="#">Focusable element</a></p> <script> let count = 0; setInterval(() => { count++; document.getElementById('text-ref').textContent = 'Count: ' + count; document.getElementById('aria-ref').setAttribute('aria-label', 'Count: ' + count); }, 1000); </script> </body> </html> 2222809 1 webkit-bug-importer 2026-06-22 11:13:36 -0700 <rdar://problem/180319221> 2225541 2 tyler_w 2026-06-30 17:23:16 -0700 Pull request: https://github.com/WebKit/WebKit/pull/68382 2225862 3 ews-feeder 2026-07-01 13:31:52 -0700 Committed 316316@main (66ebec86604f): <https://commits.webkit.org/316316@main> Reviewed commits have been landed. Closing PR #68382 and removing active labels. 480179 2026-06-22 11:13:29 -0700 2026-06-22 11:13:29 -0700 Simple test case aria-labelledby-resolution-test.html text/html 903 sarahjane_ward PCFET0NUWVBFIGh0bWw+CjxodG1sIGxhbmc9ImVuIj4KPGhlYWQ+CjxtZXRhIGNoYXJzZXQ9IlVU Ri04Ij4KPHRpdGxlPmFyaWEtbGFiZWxsZWRieSByZXNvbHV0aW9uIHRlc3Q8L3RpdGxlPgo8L2hl YWQ+Cjxib2R5PgoKPGgxPmFyaWEtbGFiZWxsZWRieSByZXNvbHV0aW9uIHRlc3Q8L2gxPgo8cD5U d28gc2VjdGlvbnMgdXBkYXRlIGEgY291bnRlciBldmVyeSBzZWNvbmQuIE5hdmlnYXRlIGF3YXkg YW5kIGJhY2sgd2l0aCBWb2ljZU92ZXIuPC9wPgoKPGgyPlNlY3Rpb24gQSDigJQgdGV4dENvbnRl bnQgb24gcmVmZXJlbmNlZCBlbGVtZW50PC9oMj4KPHNlY3Rpb24gYXJpYS1sYWJlbGxlZGJ5PSJ0 ZXh0LXJlZiI+CiAgPHAgaWQ9InRleHQtcmVmIj5Db3VudDogMDwvcD4KPC9zZWN0aW9uPgoKPHA+ PGEgaHJlZj0iIyI+Rm9jdXNhYmxlIGVsZW1lbnQ8L2E+PC9wPgoKPGgyPlNlY3Rpb24gQiDigJQg YXJpYS1sYWJlbCBvbiByZWZlcmVuY2VkIGVsZW1lbnQ8L2gyPgo8c2VjdGlvbiBhcmlhLWxhYmVs bGVkYnk9ImFyaWEtcmVmIj4KICA8cCBpZD0iYXJpYS1yZWYiIHJvbGU9ImltZyIgYXJpYS1sYWJl bD0iQ291bnQ6IDAiPlZpc3VhbCBjb250ZW50PC9wPgo8L3NlY3Rpb24+Cgo8cD48YSBocmVmPSIj Ij5Gb2N1c2FibGUgZWxlbWVudDwvYT48L3A+Cgo8c2NyaXB0PgpsZXQgY291bnQgPSAwOwpzZXRJ bnRlcnZhbCgoKSA9PiB7CiAgY291bnQrKzsKICBkb2N1bWVudC5nZXRFbGVtZW50QnlJZCgndGV4 dC1yZWYnKS50ZXh0Q29udGVudCA9ICdDb3VudDogJyArIGNvdW50OwogIGRvY3VtZW50LmdldEVs ZW1lbnRCeUlkKCdhcmlhLXJlZicpLnNldEF0dHJpYnV0ZSgnYXJpYS1sYWJlbCcsICdDb3VudDog JyArIGNvdW50KTsKfSwgMTAwMCk7Cjwvc2NyaXB0Pgo8L2JvZHk+CjwvaHRtbD4K