diff -r 000000000000 -r 6474c204b198 browser/components/sessionstore/test/browser_463206.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/components/sessionstore/test/browser_463206.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,58 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+function test() {
+  /** Test for Bug 463206 **/
+
+  waitForExplicitFinish();
+
+  let testURL = "http://mochi.test:8888/browser/" +
+    "browser/components/sessionstore/test/browser_463206_sample.html";
+
+  var frameCount = 0;
+  let tab = gBrowser.addTab(testURL);
+  tab.linkedBrowser.addEventListener("load", function(aEvent) {
+    // wait for all frames to load completely
+    if (frameCount++ < 5)
+      return;
+    tab.linkedBrowser.removeEventListener("load", arguments.callee, true);
+
+    function typeText(aTextField, aValue) {
+      aTextField.value = aValue;
+
+      let event = aTextField.ownerDocument.createEvent("UIEvents");
+      event.initUIEvent("input", true, true, aTextField.ownerDocument.defaultView, 0);
+      aTextField.dispatchEvent(event);
+    }
+
+    let doc = tab.linkedBrowser.contentDocument;
+    typeText(doc.getElementById("out1"), Date.now());
+    typeText(doc.getElementsByName("1|#out2")[0], Math.random());
+    typeText(doc.defaultView.frames[0].frames[1].document.getElementById("in1"), new Date());
+
+    let tab2 = gBrowser.duplicateTab(tab);
+    whenTabRestored(tab2, function() {
+      let doc = tab2.linkedBrowser.contentDocument;
+      let win = tab2.linkedBrowser.contentWindow;
+      isnot(doc.getElementById("out1").value,
+            win.frames[1].document.getElementById("out1").value,
+            "text isn't reused for frames");
+      isnot(doc.getElementsByName("1|#out2")[0].value, "",
+            "text containing | and # is correctly restored");
+      is(win.frames[1].document.getElementById("out2").value, "",
+            "id prefixes can't be faked");
+      // Disabled for now, Bug 588077
+      // isnot(win.frames[0].frames[1].document.getElementById("in1").value, "",
+      //       "id prefixes aren't mixed up");
+      is(win.frames[1].frames[0].document.getElementById("in1").value, "",
+            "id prefixes aren't mixed up");
+
+      // clean up
+      gBrowser.removeTab(tab2);
+      gBrowser.removeTab(tab);
+
+      finish();
+    });
+  }, true);
+}