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diff --git a/testing/web-platform/tests/css/css-view-transitions/dialog-in-top-layer-during-transition-new.html b/testing/web-platform/tests/css/css-view-transitions/dialog-in-top-layer-during-transition-new.html
new file mode 100644
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+++ b/testing/web-platform/tests/css/css-view-transitions/dialog-in-top-layer-during-transition-new.html
@@ -0,0 +1,70 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<title>View transitions: element in top layer during transition</title>
+<link rel="help" href="https://github.com/WICG/view-transitions">
+<link rel="author" href="mailto:khushalsagar@chromium.org">
+<link rel="match" href="dialog-in-top-layer-during-transition-ref.html">
+
+<script src="/common/reftest-wait.js"></script>
+<style>
+#target {
+  width: 100px;
+  height: 100px;
+  background: lightblue;
+
+  border: unset;
+  margin: 0;
+  padding: 0;
+
+  view-transition-name: dialog;
+  outline: none;
+}
+
+#target::backdrop {
+  width: 100px;
+  height: 100px;
+  background: grey;
+
+  view-transition-name: backdrop;
+}
+
+.hidden {
+  contain: paint;
+  width: 10px;
+  height: 10px;
+  background: grey;
+  view-transition-name: hidden;
+}
+
+html::view-transition-group(hidden) { animation-duration: 300s; }
+html::view-transition-image-pair(hidden) { animation: unset; opacity: 0; }
+
+html::view-transition-group(backdrop) {
+  position: fixed;
+  top: 120px;
+  left: 0;
+}
+
+html::view-transition-new(backdrop), html::view-transition-new(dialog) {
+  opacity: 1;
+  animation: unset;
+}
+</style>
+
+<dialog id="target"></dialog>
+<div id=hidden class=hidden></div>
+
+<script>
+failIfNot(document.startViewTransition, "Missing document.startViewTransition");
+
+async function runTest() {
+  const transition = document.startViewTransition(() => {
+    target.showModal();
+    target.style.background = "lightgreen";
+  });
+  await transition.ready;
+  takeScreenshot();
+}
+onload = () => requestAnimationFrame(() => requestAnimationFrame(runTest));
+</script>
+