LayoutTests/fast/inline/partial-change-with-block-in-inline-assert.html

<script src="../../resources/ui-helper.js"></script>
<style>
img {
  width: 40px;
  height: 30px;
  background-color: green;
}
</style>
<div id=container>before<span><div id=change_this>change this text</div></span>after</div>
<script>
window.testRunner?.waitUntilDone();

window.addEventListener('load', async () => {
  document.body.offsetHeight;
  await UIHelper.renderingUpdate();
  container.appendChild(document.createElement("img"));
  change_this.innerText = "PASS if no crash or assert";

  window.testRunner?.notifyDone();
}, false);
</script>