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diff --git a/gfx/layers/apz/test/mochitest/helper_tap_passive.html b/gfx/layers/apz/test/mochitest/helper_tap_passive.html
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+++ b/gfx/layers/apz/test/mochitest/helper_tap_passive.html
@@ -0,0 +1,66 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width; initial-scale=1.0">
+  <title>Ensure APZ doesn't wait for passive listeners</title>
+  <script type="application/javascript" src="apz_test_native_event_utils.js"></script>
+  <script type="application/javascript" src="apz_test_utils.js"></script>
+  <script src="/tests/SimpleTest/paint_listener.js"></script>
+  <script type="application/javascript">
+
+var touchdownTime;
+
+async function longPressLink() {
+  await synthesizeNativeTouch(document.getElementById("b"), 5, 5, SpecialPowers.DOMWindowUtils.TOUCH_CONTACT, function() {
+    dump("Finished synthesizing touch-start, waiting for events...\n");
+  });
+}
+
+var touchstartReceived = false;
+function recordEvent(e) {
+  if (!touchstartReceived) {
+    touchstartReceived = true;
+    is(e.type, "touchstart", "Got a touchstart");
+    e.preventDefault(); // should be a no-op because it's a passive listener
+    return;
+  }
+
+  // If APZ decides to wait for the content response on a particular input block,
+  // it needs to wait until both the touchstart and touchmove event are handled
+  // by the main thread. In this case there is no touchmove at all, so APZ would
+  // end up waiting indefinitely and time out the test. The fact that we get this
+  // contextmenu event (mouselongtap on Windows) at all means that APZ decided
+  // not to wait for the content response, which is the desired behaviour, since
+  // the touchstart listener was registered as a passive listener.
+  if (getPlatform() == "windows") {
+    is(e.type, "mouselongtap", "Got a mouselongtap");
+  } else {
+    is(e.type, "contextmenu", "Got a contextmenu");
+  }
+  e.preventDefault();
+
+  setTimeout(async () => {
+    await synthesizeNativeTouch(document.getElementById("b"), 5, 5, SpecialPowers.DOMWindowUtils.TOUCH_REMOVE, function() {
+      dump("Finished synthesizing touch-end to clear state; finishing test...\n");
+      subtestDone();
+    });
+  }, 0);
+}
+
+window.addEventListener("touchstart", recordEvent, { passive: true, capture: true });
+if (getPlatform() == "windows") {
+  SpecialPowers.addChromeEventListener("mouselongtap", recordEvent, true);
+} else {
+  window.addEventListener("contextmenu", recordEvent, true);
+}
+
+waitUntilApzStable()
+.then(longPressLink);
+
+  </script>
+</head>
+<body>
+ <a id="b" href="#">Link to nowhere</a>
+</body>
+</html>