fix(live-region-controller): stop transcripts re-reading history and correct aria-atomic - #210
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…correct aria-atomic A role=log whose whole list re-renders, or whose newest entry streams in, makes screen readers re-read the entire history; iOS VoiceOver reads the whole conversation. Document keeping the transcript non-live and announcing each completed turn through a dedicated announcer, and add LIVE-003. Caution that an explicit aria-atomic=true can silence a region in JAWS on Firefox (standards-support #876), and fix checklist item 11, which told reviewers to set aria-atomic=true on status regions.
chrisnestrud
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taylorarndt
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September 29, 2026 01:54
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Summary
A
role="log"whose list re-renders, or whose newest entry streams in, makesscreen readers re-read the entire history - iOS VoiceOver reads the whole
conversation. Separately, checklist item 11 told reviewers to set
aria-atomic="true"on status regions, but an explicitaria-atomic="true"cansilence a region entirely in JAWS on Firefox (standards-support #876).
What changed
skills/live-region-controller/references/politeness-levels.md: explicitaria-liveforrole="status", the clear-and-refill pattern for repeatedmessages, transcript guidance for
role="log", and thearia-atomiccaution.skills/live-region-controller/SKILL.md: corrected checklist item 11; addeditems 15-17 and three Common Mistakes entries.
skills/live-region-controller/examples/findings.json: newLIVE-003.CHANGELOG.md,skills/a11y-core/references/sources.md.Source Citations
Verification
node scripts/verify.mjs --only spec,skills,conformance,budgets,findings,release,matrices- all passnode .github/scripts/markdown-a11y-lint.mjs . --regression --baseline-ref main --fail-on error- cleanRefs #207