demo · v132

showModal / showPopover on inactive documents

Construct a dialog and popover, then move them into an iframe and immediately detach the iframe. The clicks at the bottom call showModal() and showPopover() on those now-inactive elements. Chrome 132 throws InvalidStateError; pre-132 silently no-ops.

click Adopt first

the spec change

dialog.showModal();    // pre-132: silent no-op, post-132: throws InvalidStateError
popover.showPopover(); // same

see also