LayoutTests/fast/inline/contenteditable-with-leading-whitespace-crash.html

<style>
div {
  display: contents;
}

.flex_box {
  display: flex;
}
</style>PASS if no crash.<div class=flex_box onfocusin="justify()" contenteditable="true" draggable="true"> <details id=details></details></div>
<script>
if (window.testRunner)
  testRunner.dumpAsText();
document.body.offsetHeight;
details.outerText = "some content";
document.defaultView.find("some");

function justify() {
  document.execCommand("justifyCenter", false, null);
}
</script>