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+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=402089
+-->
+<head>
+  <title>Test for Bug 402089</title>
+  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="text/javascript" src="/tests/SimpleTest/EventUtils.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<!-- setTimeout so that the test starts after paint suppression ends -->
+<body onload="setTimeout(doTest,0);">
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=402089">Mozilla Bug 402089</a>
+<p id="display"></p>
+<div id="content">
+  <pre id="result1"></pre>
+  <pre id="result2"></pre>
+</div>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+
+/** Test for Bug 402089 **/
+
+var cachedEvent = null;
+
+function testCachedEvent() {
+  testEvent('result2');
+  ok((document.getElementById('result1').textContent ==
+      document.getElementById('result2').textContent),
+      "Event coordinates should be the same after dispatching.");
+  SimpleTest.finish();
+}
+
+function testEvent(res) {
+  var s = cachedEvent.type + "\n";
+  s += "clientX: " + cachedEvent.clientX + ", clientY: " + cachedEvent.clientY + "\n";
+  s += "screenX: " + cachedEvent.screenX + ", screenY: " + cachedEvent.screenY + "\n";
+  s += "layerX: " + cachedEvent.layerX + ", layerY: " + cachedEvent.layerY + "\n";
+  s += "pageX: " + cachedEvent.pageX + ", pageY: " + cachedEvent.pageY + "\n";
+  document.getElementById(res).textContent += s;
+}
+
+function clickHandler(e) {
+  cachedEvent = e;
+  testEvent('result1');
+  e.stopPropagation();
+  e.preventDefault();
+  window.removeEventListener("click", clickHandler, true);
+  setTimeout(testCachedEvent, 10);
+}
+
+function doTest() {
+  window.addEventListener("click", clickHandler, true);
+  var utils = SpecialPowers.getDOMWindowUtils(window);
+  utils.sendMouseEvent("mousedown", 1, 1, 0, 1, 0);
+  utils.sendMouseEvent("mouseup", 1, 1, 0, 1, 0);
+
+}
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.requestFlakyTimeout("untriaged");
+</script>
+</pre>
+</body>
+</html>
+