Weekly github digest (HTML specs)

Issues
------
* w3c/html-aam (+0/-0/💬5)
  2 issues received 5 new comments:
  - #606 Map fieldset readonly state to accessibility (1 by scottaohara)
    https://github.com/w3c/html-aam/issues/606 
  - #605 whitespace-only alt attribute treated differently (4 by giacomo-petri, rahimabdi, scottaohara)
    https://github.com/w3c/html-aam/issues/605 

* w3c/html-aria (+0/-3/💬2)
  2 issues received 2 new comments:
  - #587 Clarification on hidden Attribute (Section 4.2) (1 by scottaohara)
    https://github.com/w3c/html-aria/issues/587 [2026-ac-review] 
  - #586 Confused with <img> element in the table in section 4 (1 by scottaohara)
    https://github.com/w3c/html-aria/issues/586 [2026-ac-review] 

  3 issues closed:
  - Clarification on hidden Attribute (Section 4.2) https://github.com/w3c/html-aria/issues/587 [2026-ac-review] 
  - Inconsistency in Example 5 vs. Example 16 https://github.com/w3c/html-aria/issues/583 
  -  Grammatical typo in Section 4.3 and minor phrasing adjustments in Section 4.3.1. https://github.com/w3c/html-aria/issues/581 [2026-ac-review] 

* w3c/webcomponents (+0/-0/💬4)
  3 issues received 4 new comments:
  - #1114 Reference Target: Rethinking attribute reflection for invalid reference targets (1 by dandclark)
    https://github.com/WICG/webcomponents/issues/1114 
  - #1098 Reference Target: How to handle events fired on the reference target by related elements? (2 by dandclark, smaug----)
    https://github.com/WICG/webcomponents/issues/1098 
  - #1055 Idea: A tree-aware task scheduler (1 by noamr)
    https://github.com/WICG/webcomponents/issues/1055 

* whatwg/html (+5/-2/💬26)
  5 issues created:
  - Upstream recent changes from sanitizer API after main upstreaming (by noamr)
    https://github.com/whatwg/html/issues/12481 
  - <textarea> tag reflecting indentation tabs in textarea box. (by sc1-moo)
    https://github.com/whatwg/html/issues/12479 
  - Upcoming WHATNOT meeting on 2026-05-28 (by jstenback)
    https://github.com/whatwg/html/issues/12476 [agenda+] 
  - New IDL attributes or methods on AbstractRange to get/set character offsets regardless of node structure (by LeaVerou)
    https://github.com/whatwg/html/issues/12475 [addition/proposal] [needs implementer interest] [stage: 0] 
  - Properly define <select><button> semantics (by annevk)
    https://github.com/whatwg/html/issues/12474 [topic: rendering] [needs tests] [topic: select] 

  12 issues received 26 new comments:
  - #12481 Upstream recent changes from sanitizer API after main upstreaming (1 by noamr)
    https://github.com/whatwg/html/issues/12481 
  - #12479 <textarea> tag reflecting indentation tabs in textarea box. (3 by Grenish, sc1-moo)
    https://github.com/whatwg/html/issues/12479 
  - #12456 Upcoming WHATNOT meeting on 2026-05-21 (3 by andresrega-msft, jstenback)
    https://github.com/whatwg/html/issues/12456 [agenda+] 
  - #12185 Special case label associated with a button in popover light dismiss (2 by jakearchibald, lukewarlow)
    https://github.com/whatwg/html/issues/12185 [addition/proposal] [needs implementer interest] [topic: popover] 
  - #12150 Platform-Provided Behaviors for Custom Elements (1 by noamr)
    https://github.com/whatwg/html/issues/12150 [addition/proposal] [needs implementer interest] [topic: custom elements] [stage: 1] 
  - #11478 OpaqueRange Interface (1 by LeaVerou)
    https://github.com/whatwg/html/issues/11478 [addition/proposal] [agenda+] [stage: 2] 
  - #11108 History API: PushState can silently fail in Chromium while Gecko/Webkit raises exception (1 by zcorpan)
    https://github.com/whatwg/html/issues/11108 [compat] [topic: navigation] [interop] [agenda+] 
  - #10988 The topmost popover ancestor algorithm is used for manual popovers (2 by Gingeh, annevk)
    https://github.com/whatwg/html/issues/10988 [topic: popover] 
  - #10378 HTML Video Poster Image: Enable Responsive Images and ALT Text for Poster  (9 by noamr, scottjehl, zcorpan)
    https://github.com/whatwg/html/issues/10378 [addition/proposal] [needs implementer interest] [topic: media] [stage: 1] 
  - #6636 Lazy loading video element poster attribute (1 by scottjehl)
    https://github.com/whatwg/html/issues/6636 [addition/proposal] [topic: media] 
  - #3552 createImageBitmap's note is wrong (1 by Devansh232406)
    https://github.com/whatwg/html/issues/3552 [good first issue] [topic: canvas] 
  - #2660 Canvas origin-clean resetting information disagrees with browser behaviour (1 by annevk)
    https://github.com/whatwg/html/issues/2660 [topic: canvas] [topic: origin] 

  2 issues closed:
  - Upcoming WHATNOT meeting on 2026-05-21 https://github.com/whatwg/html/issues/12456 [agenda+] 
  - `scrollLeftMax` and `scrollTopMax` https://github.com/whatwg/html/issues/12472 [addition/proposal] [needs implementer interest] 

* whatwg/dom (+0/-1/💬0)
  1 issues closed:
  - TreeWalker.nextNode loops forever if last node of a detached node tree is not accepted by the filter https://github.com/whatwg/dom/issues/1102 [topic: traversal] 



Pull requests
-------------
* w3c/html-aria (+8/-0/💬4)
  8 pull requests submitted:
  - 597  (by dependabot)
    https://github.com/w3c/html-aria/pull/597 
  - 596  (by nschonni)
    https://github.com/w3c/html-aria/pull/596 
  - 595  (by scottaohara)
    https://github.com/w3c/html-aria/pull/595 
  - 594  (by nschonni)
    https://github.com/w3c/html-aria/pull/594 
  - 593  (by nschonni)
    https://github.com/w3c/html-aria/pull/593 
  - 592  (by scottaohara)
    https://github.com/w3c/html-aria/pull/592 
  - 591  (by nschonni)
    https://github.com/w3c/html-aria/pull/591 
  - 590  (by daniel-montalvo)
    https://github.com/w3c/html-aria/pull/590 

  4 pull requests received 4 new comments:
  - #596 chore: fix some typos flagged by cSpell (1 by w3cbot)
    https://github.com/w3c/html-aria/pull/596 
  - #594 chore: cleanup markup flagged by prettier --check (1 by w3cbot)
    https://github.com/w3c/html-aria/pull/594 
  - #593 chore: drop stray closing anchor tags (1 by w3cbot)
    https://github.com/w3c/html-aria/pull/593 
  - #592 Clarify img element accessibility descriptions (1 by mtrootyy)
    https://github.com/w3c/html-aria/pull/592 

* whatwg/html (+3/-0/💬19)
  3 pull requests submitted:
  - 12480  (by hjanuschka)
    https://github.com/whatwg/html/pull/12480 
  - 12478  (by Devansh232406)
    https://github.com/whatwg/html/pull/12478 
  - 12473  (by foolip)
    https://github.com/whatwg/html/pull/12473 

  7 pull requests received 19 new comments:
  - #12473 Make muted content attribute affect muted IDL attribute only once (5 by annevk, foolip)
    https://github.com/whatwg/html/pull/12473 [topic: media] 
  - #12444 Add `<meta name="responsive-embedded-sizing">` (1 by kojiishi)
    https://github.com/whatwg/html/pull/12444 
  - #12426 Pass response to WebDriver BiDi donwnload events. (1 by OrKoN)
    https://github.com/whatwg/html/pull/12426 
  - #12395 Upstream sanitizer api (1 by zcorpan)
    https://github.com/whatwg/html/pull/12395 
  - #12239 HTML integration for "Error Stack Accessor" TC39 Proposal (1 by ljharb)
    https://github.com/whatwg/html/pull/12239 [addition/proposal] [needs implementer interest] [topic: serialize and transfer] 
  - #11723 [focusgroup] Add the focusgroup attribute  (4 by annevk, janewman, keithamus)
    https://github.com/whatwg/html/pull/11723 
  - #11687 Declarative CSS Modules (6 by KurtCattiSchmidt, justinfagnani, noamr)
    https://github.com/whatwg/html/pull/11687 [agenda+] 

* whatwg/dom (+0/-0/💬7)
  3 pull requests received 7 new comments:
  - #1462 Record task-like timing in fire an event (1 by noamr)
    https://github.com/whatwg/dom/pull/1462 
  - #1377 [DRAFT] Propagate events into the event's source's tree where appropriate. (2 by dandclark)
    https://github.com/whatwg/dom/pull/1377 
  - #1353 Add reference target to shadow root (4 by dandclark, smaug----)
    https://github.com/whatwg/dom/pull/1353 


Repositories tracked by this digest:
-----------------------------------
* https://github.com/w3c/html-aam
* https://github.com/w3c/html-aria
* https://github.com/w3c/html-extensions
* https://github.com/w3c/htmlwg
* https://github.com/w3c/webcomponents
* https://github.com/whatwg/html
* https://github.com/whatwg/dom


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Received on Monday, 25 May 2026 17:00:34 UTC