css/css-view-transitions/empty-render-target-crash.html

<!DOCTYPE html>
<title>We shouldn't crash if the composited parents are empty</title>
<link rel="help" href="https://drafts.csswg.org/css-view-transitions-1">
<link rel="author" href="mailto:vmpstr@chromium.org">

<body style="offset-path: ray(45deg closest-side contain);xborder-top: 1px solid black;inset-inline-start: 0;align-content: space-evenly flex-start safe;-webkit-mask-image: linear-gradient(white, white);border-inline-start-style: solid;flex-grow: 1.5;border-top-color: black;border-left-color: #000;-webkit-margin-start: 4px;-webkit-margin-before: 1px;offset-position: 30px 10px;-webkit-border-vertical-spacing: 10px;empty-cells: hide;scroll-padding-bottom: 12px;-webkit-clip-path: polygon(nonzero, 10px 75px, 180px 180px, 100px 10px, 10px 180px, 180px 75px, 10px 75px)"> { ;  false;</script><iframe srcdoc="
"></iframe>
<script>
  onload = runTest;
  async function startTransition(document, oldColor) {
    await document.startViewTransition(() => {
    }).ready;
  }
  async function runTest() {
    const iframeDocument = document.querySelector("iframe").contentDocument;
    await startTransition(iframeDocument, "blue");
    await startTransition(document);
  }
</script>