Weekly github digest (HTML specs) from W3C Webmaster via GitHub API on 2026-09-21 (public-html@w3.org from September 2026)

From: W3C Webmaster via GitHub API <noreply@w3.org>
Date: Mon, 21 Sep 2026 17:00:30 +0000
To: public-html@w3.org
Message-ID: <179001003060.2455901.7637121555043479017@janus.w3.internal>
Issues
------
* whatwg/html (+15/-6/💬53)
  15 issues created:
  - load() doesn't actually take precedence over loading=lazy (by zcorpan)
    https://github.com/whatwg/html/issues/12975 [topic: media] 
  - Text tracks of lazy-loading media elements are fetched before the media resumes (by zcorpan)
    https://github.com/whatwg/html/issues/12974 [topic: media] 
  - Lazy-loading media elements fire loadstart and reject source candidates before deferring, unlike Chrome (by zcorpan)
    https://github.com/whatwg/html/issues/12973 [topic: media] 
  - Inserting a source element sets the delaying-the-load-event flag even for loading=lazy media (by zcorpan)
    https://github.com/whatwg/html/issues/12971 [topic: media] 
  - is-closing / window.closed stays true if beforeunload is canceled (by vinhill)
    https://github.com/whatwg/html/issues/12969 [topic: frames/navigables/browsing contexts] 
  - XML encoding scanning in XML documents is not interoperable (by domenic)
    https://github.com/whatwg/html/issues/12968 [topic: parser] [interop] 
  - Destroying a child navigable should detach its subtree synchronously (by shannonbooth)
    https://github.com/whatwg/html/issues/12966 [topic: navigation] 
  - Is it intentional that the "check the usability of the image argument" steps don't fail for natural width/height that don't exist? (by weinig)
    https://github.com/whatwg/html/issues/12964 [clarification] [topic: canvas] 
  - In `appearance: base` <select>, use the label attribute as a fallback rather than a rendering override (by sb3nder)
    https://github.com/whatwg/html/issues/12963 [addition/proposal] [needs implementer interest] 
  - Session history: a changing navigable continuation activates a target entry that a queue-jumping synchronous navigation has replaced or removed (by sideshowbarker)
    https://github.com/whatwg/html/issues/12961 [compat] [topic: navigation] 
  - Upcoming WHATNOT meeting on 2026-09-24 (by tabatkins)
    https://github.com/whatwg/html/issues/12958 [agenda+] 
  - Meeting 51 for joint OpenUI-WHATWG/HTML-CSSWG task force on styleable form controls (by mfreed7)
    https://github.com/whatwg/html/issues/12956 [task-force-agenda] 
  - Define Worker constructor behavior for a detached Window (by kyle-elliott-tob)
    https://github.com/whatwg/html/issues/12955 
  - Window.close uses target document flags for the caller sandbox check (by kyle-elliott-tob)
    https://github.com/whatwg/html/issues/12954 
  - Using attr() for select list box appearance makes rendering mismatch semantics (by annevk)
    https://github.com/whatwg/html/issues/12952 [topic: rendering] [topic: select] 

  23 issues received 53 new comments:
  - #12973 Lazy-loading media elements fire loadstart and reject source candidates before deferring, unlike Chrome (1 by zcorpan)
    https://github.com/whatwg/html/issues/12973 [topic: media] 
  - #12969 is-closing / window.closed stays true if beforeunload is canceled (1 by vinhill)
    https://github.com/whatwg/html/issues/12969 [topic: frames/navigables/browsing contexts] 
  - #12968 XML encoding scanning in XML documents is not interoperable (4 by annevk, domenic, zcorpan)
    https://github.com/whatwg/html/issues/12968 [topic: parser] [interop] 
  - #12964 Is it intentional that the "check the usability of the image argument" steps don't fail for natural width/height that don't exist? (1 by annevk)
    https://github.com/whatwg/html/issues/12964 [clarification] [topic: canvas] 
  - #12963 In `appearance: base` <select>, use the label attribute as a fallback rather than a rendering override (2 by annevk, sb3nder)
    https://github.com/whatwg/html/issues/12963 [addition/proposal] [needs implementer interest] 
  - #12956 Meeting 51 for joint OpenUI-WHATWG/HTML-CSSWG task force on styleable form controls (1 by mfreed7)
    https://github.com/whatwg/html/issues/12956 [task-force-agenda] 
  - #12955 Define Worker constructor behavior for a detached Window (1 by kyle-elliott-tob)
    https://github.com/whatwg/html/issues/12955 
  - #12954 Window.close uses target document flags for the caller sandbox check (1 by kyle-elliott-tob)
    https://github.com/whatwg/html/issues/12954 
  - #12951 Reconsider validity of `<style>` inside `<body>` (3 by HansBrende, zcorpan)
    https://github.com/whatwg/html/issues/12951 [document conformance] 
  - #12923 Upcoming WHATNOT meeting on 2026-09-17 (3 by bkardell, jstenback, tabatkins)
    https://github.com/whatwg/html/issues/12923 [agenda+] 
  - #12900 Meeting 50 for joint OpenUI-WHATWG/HTML-CSSWG task force on styleable form controls (7 by fantasai, mfreed7)
    https://github.com/whatwg/html/issues/12900 [task-force-agenda] 
  - #12855 select validity (1 by sb3nder)
    https://github.com/whatwg/html/issues/12855 [topic: select] 
  - #12712 `<img sizes=auto>` triggers wasteful fetches when hiding/removing the image (3 by austinh, zcorpan)
    https://github.com/whatwg/html/issues/12712 [topic: img] 
  - #12537 Does the sanitizer impact HTML integration points (2 by Jamesernator, annevk)
    https://github.com/whatwg/html/issues/12537 [topic: sanitizer] 
  - #11743 Proposal: Add optimization to ignore "duplicate" navigations (1 by zcorpan)
    https://github.com/whatwg/html/issues/11743 [addition/proposal] [needs implementer interest] [topic: navigation] 
  - #11535 The select element doesn't support slotted option elements (1 by trusktr)
    https://github.com/whatwg/html/issues/11535 [addition/proposal] [needs implementer interest] [topic: shadow] [topic: custom elements] [stage: 1] [topic: select] 
  - #10677 Canvas TextMetrics additions for editing and text styling (2 by chenglou, schenney-chromium)
    https://github.com/whatwg/html/issues/10677 [addition/proposal] [needs implementer interest] [topic: canvas] [i18n-tracker] 
  - #10673 Style Module Imports via `<link>` Elements (2 by frederikbosch, sorvell)
    https://github.com/whatwg/html/issues/10673 [addition/proposal] [topic: shadow] [topic: script] [stage: 2] [topic: imports/exports] 
  - #10378 HTML Video Poster Image: Enable Responsive Images and ALT Text for Poster  (9 by scottjehl, zcorpan)
    https://github.com/whatwg/html/issues/10378 [addition/proposal] [needs implementer interest] [topic: media] [stage: 1] 
  - #5488 <input type="time"> : Time vs. duration (2 by StephanLuis, Wigny)
    https://github.com/whatwg/html/issues/5488 [addition/proposal] [needs implementer interest] [topic: forms] [i18n-tracker] 
  - #5312 Form Submission: Fix the "Double Submit problem" at the spec level (1 by zcorpan)
    https://github.com/whatwg/html/issues/5312 [addition/proposal] [topic: forms] 
  - #5025 Allow animations to be given a target framerate (3 by MarjaE2, mdrejhon)
    https://github.com/whatwg/html/issues/5025 [addition/proposal] [needs implementer interest] [topic: event loop] 
  - #127 Add `document.ready` promise (1 by keithamus)
    https://github.com/whatwg/html/issues/127 [addition/proposal] [agenda+] 

  6 issues closed:
  - In `appearance: base` <select>, use the label attribute as a fallback rather than a rendering override https://github.com/whatwg/html/issues/12963 [addition/proposal] [needs implementer interest] 
  - Logic error in the "get an XML encoding" algorithm? https://github.com/whatwg/html/issues/6939 [topic: parser] 
  - "fire a focus event" expects an element as argument, but is called with a Window https://github.com/whatwg/html/issues/12866 [topic: events] [interop] 
  - Meeting 50 for joint OpenUI-WHATWG/HTML-CSSWG task force on styleable form controls https://github.com/whatwg/html/issues/12900 [task-force-agenda] 
  - Window.close uses target document flags for the caller sandbox check https://github.com/whatwg/html/issues/12954 
  - Define Worker constructor behavior for a detached Window https://github.com/whatwg/html/issues/12955 

* whatwg/dom (+0/-0/💬12)
  4 issues received 12 new comments:
  - #1501 Make preventDefault reserve undo history saving option (1 by smaug----)
    https://github.com/whatwg/dom/issues/1501 [needs implementer interest] [addition/proposal] 
  - #1406 Proposal: moveOrInsertBefore() (4 by annevk, smaug----, trusktr)
    https://github.com/whatwg/dom/issues/1406 [needs implementer interest] [addition/proposal] 
  - #1296 Provide an AbortSignal that aborts when Nodes become disconnected (3 by keithamus, sorvell, tabatkins)
    https://github.com/whatwg/dom/issues/1296 [topic: custom elements] [needs implementer interest] [addition/proposal] [topic: aborting] [topic: nodes] 
  - #662 Custom element callback/promise for "connected and parsed" (4 by frehner, keithamus, patricknelson, trusktr)
    https://github.com/whatwg/dom/issues/662 [topic: custom elements] [needs implementer interest] [addition/proposal] [agenda+] 



Pull requests
-------------
* whatwg/html (+7/-0/💬7)
  7 pull requests submitted:
  - 12972  (by zcorpan)
    https://github.com/whatwg/html/pull/12972 
  - 12970  (by zcorpan)
    https://github.com/whatwg/html/pull/12970 
  - 12967  (by domenic)
    https://github.com/whatwg/html/pull/12967 
  - 12962  (by pepplesoniaa-sudo)
    https://github.com/whatwg/html/pull/12962 
  - 12960  (by shannonbooth)
    https://github.com/whatwg/html/pull/12960 
  - 12959  (by shannonbooth)
    https://github.com/whatwg/html/pull/12959 
  - 12957  (by nicolo-ribaudo)
    https://github.com/whatwg/html/pull/12957 

  6 pull requests received 7 new comments:
  - #12962 Meta: update the link to GitHub's blame documentation (1 by zcorpan)
    https://github.com/whatwg/html/pull/12962 
  - #12959 Evaluate the Trusted Types-rewritten javascript: URL (2 by annevk, shannonbooth)
    https://github.com/whatwg/html/pull/12959 [topic: javascript: URLs] 
  - #12925 Align frame connection steps with iframe (1 by zcorpan)
    https://github.com/whatwg/html/pull/12925 [compat] [topic: shadow] [topic: frames/navigables/browsing contexts] 
  - #12922 Validate integrity metadata in module map (1 by ricea)
    https://github.com/whatwg/html/pull/12922 
  - #12860 Module Stylesheet <link> tags (1 by keithamus)
    https://github.com/whatwg/html/pull/12860 [agenda+] 
  - #12497 Preserve focused area across bfcache reactivation (1 by hjanuschka)
    https://github.com/whatwg/html/pull/12497 

* whatwg/dom (+0/-0/💬2)
  1 pull requests received 2 new comments:
  - #1085 Add a fully active check for EventTarget in event listener inner invoke (2 by annevk, domenic)
    https://github.com/whatwg/dom/pull/1085 [topic: events] 


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, 21 September 2026 17:00:31 UTC