css/css-grid/subgrid/subgrid-reflow-root-crash.html

<style>
* {
  grid-template-rows: subgrid;
  display: inline-grid;
}

html {
  contain: strict;
}
</style>
<script>
  window.addEventListener('load', () => {
    document.head.appendChild(document.createElement('style'))
  })
</script>