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Upcoming WHATNOT meeting on 20YY-MM-DD

agenda+To be discussed at a triage meetingTo be discussed at a triage meeting

Status: Open.

#12413 In whatwg/html;

· jstenback opened on Apr 30, 2026

Meeting 42 for joint OpenUI-WHATWG/HTML-CSSWG task force on styleable form controls

Status: Open.

#12412 In whatwg/html;

· mfreed7 opened on Apr 30, 2026

Should cross-origin isolation be part of the agent cluster key?

security/privacyThere are security or privacy implicationsThere are security or privacy implications

topic: cross-origin-embedder-policyIssues and ideas around the new "require CORP for subresource requests and frames and etc" proposalIssues and ideas around the new "require CORP for subresource requests and frames and etc" proposal

topic: cross-origin-opener-policyIssues and ideas around the new "inverse of rel=noopener" headerIssues and ideas around the new "inverse of rel=noopener" header

topic: workers

Status: Open.

#12408 In whatwg/html;

· annevk opened on Apr 27, 2026

Navigation API: Set ongoing navigation to null aborts history traversal navigate event

Status: Open.

#12407 In whatwg/html;

· theIDinside opened on Apr 26, 2026

Does the "shadow root" concept include UA shadow roots?

topic: shadowRelates to shadow trees (as defined in DOM)Relates to shadow trees (as defined in DOM)

Status: Open.

#12404 In whatwg/html;

· mfreed7 opened on Apr 24, 2026

<link> quirks should probably match stylesheet origin-clean flag

topic: fetch

topic: link

topic: style

Status: Open.

#12403 In whatwg/html;

· emilio opened on Apr 24, 2026

Should IME composition be treated more explicitly as a distinct input context, rather than ordinary application shortcut input?

Status: Open.

#12398 In whatwg/html;

· kyouhei-horizumi opened on Apr 22, 2026

Close or disable pickers of disabled controls

addition/proposalNew features or enhancementsNew features or enhancements

needs implementer interestMoving the issue forward requires implementers to express interestMoving the issue forward requires implementers to express interest

Status: Open.

#12392 In whatwg/html;

· sb3nder opened on Apr 20, 2026

SpellCheck Custom Dictionary / exemptions

addition/proposalNew features or enhancementsNew features or enhancements

needs implementer interestMoving the issue forward requires implementers to express interestMoving the issue forward requires implementers to express interest

stage: 1IncubationIncubation

Status: Open.

#12388 In whatwg/html;

· bkardell opened on Apr 17, 2026

Dragging <a href="blob:..." download> should include a File in the drag data store

addition/proposalNew features or enhancementsNew features or enhancements

needs implementer interestMoving the issue forward requires implementers to express interestMoving the issue forward requires implementers to express interest

Status: Open.

#12387 In whatwg/html;

· janez-resnik opened on Apr 17, 2026

Native Popover API: Esc key causes focus loss with nested popovers

Status: Open.

#12386 In whatwg/html;

· shanthambi opened on Apr 17, 2026

Drag-andDrop setDragImage offset ambiguities

Status: Open.

#12384 In whatwg/html;

· jabcreations opened on Apr 16, 2026