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diff --git a/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-multiple-times.html b/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-multiple-times.html
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+++ b/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-multiple-times.html
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+<head>
+  <title>Images with loading='lazy' can be lazy loaded multiple times</title>
+  <link rel="author" title="Dom Farolino" href="mailto:dom@chromium.org">
+  <link rel="help" href="https://html.spec.whatwg.org/multipage/urls-and-fetching.html#lazy-loading-attributes">
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+</head>
+
+<body>
+  <!-- This is used to represent the top of the viewport, so we can scroll the
+       below-viewport image out-of-view later in the test -->
+  <div id="top_div"></div>
+  <div style="height:1000vh;"></div>
+  <img id="below_viewport" loading="lazy" src="resources/image.png?image-loading-lazy-multiple-times-first">
+
+<script>
+  const t = async_test("Images with loading='lazy' can be lazy loaded multiple times");
+  const image = document.querySelector('#below_viewport');
+  const top_div = document.querySelector('#top_div');
+
+  let has_window_load_fired = false;
+
+  // This should be triggered first.
+  window.addEventListener('load', t.step_func(() => {
+    has_window_load_fired = true;
+    // Scroll the loading=lazy below-viewport image into view, so that it loads.
+    image.scrollIntoView();
+  }));
+
+  image.onload = t.step_func(() => {
+    assert_true(has_window_load_fired,
+                "The loading=lazy below-viewport image should not block the " +
+                "window load event");
+    changeImageSourceAndScrollToTop();
+  });
+
+  function changeImageSourceAndScrollToTop() {
+    top_div.scrollIntoView();
+
+    // Allow some time for scroll back to top, since we don't
+    // want the image to still be in the viewport and trigger a
+    // load due to the scroll being slow.
+    t.step_timeout(() => {
+      // Lazily load a "different" image.
+      image.src = 'resources/image.png?image-loading-lazy-multiple-times-second';
+      image.onload =
+        t.unreached_func("The loading=lazy below-viewport image should lazily " +
+                         "load its second image, and not load it eagerly when " +
+                         "the `src` attribute is changed");
+
+      // In 1s, scroll the image *back* into view, and record that it loads
+      // successfully.
+      t.step_timeout(() => {
+        image.onload = t.step_func_done();
+        image.scrollIntoView();
+      }, 1000);
+    }, 500);
+  }
+</script>
+</body>