Issues

• "create navigation params by fetching" blocks about:blank and data: iframes under COEP

  whatwg/html#13086 · Filter by author shannonbooth opened on Oct 16, 2026

• Inserting an iframe into a non-fully active document creates a child navigable

  topic: frames/navigables/browsing contexts
  whatwg/html#13085 · Filter by author zcorpan opened on Oct 16, 2026
  2

• Lazy video poster never loads when no media fetch is parked

  topic: media
  whatwg/html#13083 · Filter by author zcorpan opened on Oct 15, 2026

• Upcoming WHATNOT meeting on 2026-11-12

  agenda+
  whatwg/html#13082 · Filter by author jstenback opened on Oct 15, 2026

• Meeting 53 for joint OpenUI-WHATWG/HTML-CSSWG task force on styleable form controls

  whatwg/html#13081 · Filter by author mfreed7 opened on Oct 15, 2026
  1

• createContextualFragment() external scripts without async run async in browsers

  topic: script
  whatwg/html#13079 · Filter by author zcorpan opened on Oct 15, 2026
  2

• Responsive images: should we define source selection normatively instead of leaving it implementation-defined

  topic: img
  whatwg/html#13077 · Filter by author noamr opened on Oct 14, 2026
  2

• Custom element registry for elements created inside <template for>

  whatwg/html#13076 · Filter by author zcorpan opened on Oct 14, 2026
  2

• Should <template for> patch when shadowrootmode doesn't attach a shadow root?

  whatwg/html#13075 · Filter by author zcorpan opened on Oct 14, 2026
  2

• drawImage() with a density-corrected img: image pixels or CSS pixels?

  interoptopic: canvastopic: img
  whatwg/html#13074 · Filter by author zcorpan opened on Oct 14, 2026

• Timing of CE reactions with adoption agency

  topic: sanitizer
  whatwg/html#13072 · Filter by author noamr opened on Oct 14, 2026

• Authors have no way to ask for a higher or lower pixel density than the browser's default when selecting from srcset

  addition/proposalneeds implementer interesttopic: img
  whatwg/html#13069 · Filter by author austinh opened on Oct 13, 2026
  8

• Media element attributes resolve against the fragment parser's inert document's base URL

  topic: media
  whatwg/html#13068 · Filter by author noamr opened on Oct 13, 2026

• Internal ancestor origin objects list creation steps always get a null parentDoc

  whatwg/html#13066 · Filter by author zcorpan opened on Oct 13, 2026

• Proposal: Expose sequential focus navigation primitives

  addition/proposalneeds implementer interest
  whatwg/html#13051 · Filter by author vmpstr opened on Oct 8, 2026
  2

• "Update the image data" keeps a stale pixel density when a partially available image is reselected

  topic: img
  whatwg/html#13049 · Filter by author zcorpan opened on Oct 8, 2026

• Preload sets href to the result of "select an image source from a source set", which isn't a URL

  topic: resource hints (inc. preload)
  whatwg/html#13048 · Filter by author zcorpan opened on Oct 8, 2026

• Expose crossOriginIsolated on worklets

  addition/proposalneeds implementer interest
  whatwg/html#13047 · Filter by author mjwilson-google opened on Oct 8, 2026

• Consider updating the WebDriver endpoint for the Consume User Activation of Window command

  whatwg/html#13042 · Filter by author whimboo opened on Oct 6, 2026
  2

• “navigate to a fragment” on an initial about:blank with a null latest entry fails “Assert: entriesForNavigationAPI is given.”

  compattopic: navigation
  Bug

  whatwg/html#13041 · Filter by author sideshowbarker opened on Oct 6, 2026

• Cloning an option that contains a selected option into <selectedcontent> loops forever

  topic: select
  whatwg/html#13038 · Filter by author meziantou opened on Oct 5, 2026

• Parser follow-ups for processing instructions and <template for>

  topic: parser
  whatwg/html#13036 · Filter by author annevk opened on Oct 4, 2026
  2

  

• “advisory information” algorithm stops at a shadow root, but all engines walk the flat tree

  compattopic: shadow
  Bug

  whatwg/html#13035 · Filter by author sideshowbarker opened on Oct 4, 2026

• Autofill field name is "webauthn" when autocomplete ends in "webauthn"

  topic: forms
  whatwg/html#13028 · Filter by author annevk opened on Oct 3, 2026
  1

• Specify closing the select picker when it can no longer be shown

  topic: select
  whatwg/html#13027 · Filter by author annevk opened on Oct 3, 2026
  5