testing/web-platform/tests/html/semantics/interactive-elements/the-details-element/nested-top-layer-elements-in-details-crash.html


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<!doctype HTML>
<link rel=author href="mailto:vmpstr@chromium.org">
<link rel=help href="https://crbug.com/1273395">

<dialog id="parentElement">
  <details id="childElement" open="true" ontoggle="toggleHandler()">
    <dialog id="grandchildElement">
    </dialog>
  </details>
</dialog>
<script>
function toggleHandler() {
 grandchildElement.showModal();
 parentElement.showModal();
 childElement.open = false;
}
</script>