diff -r 000000000000 -r 6474c204b198 browser/components/tabview/test/browser_tabview_bug649307.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/components/tabview/test/browser_tabview_bug649307.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,43 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function test() {
+  waitForExplicitFinish();
+
+  newWindowWithTabView(function (win) {
+    let cw = win.TabView.getContentWindow();
+
+    registerCleanupFunction(function () {
+      cw.gPrefBranch.clearUserPref("animate_zoom");
+      win.close();
+    });
+
+    cw.gPrefBranch.setBoolPref("animate_zoom", false);
+
+    let groupItem = cw.GroupItems.groupItems[0];
+    let shield = groupItem.$titleShield[0];
+    let keys = ["RETURN", "ESCAPE"];
+
+    ok(win.TabView.isVisible(), "tabview is visible");
+
+    let simulateKeyPress = function () {
+      let key = keys.shift();
+
+      if (!key) {
+        ok(win.TabView.isVisible(), "tabview is still visible");
+        finish();
+        return;
+      }
+
+      EventUtils.synthesizeMouseAtCenter(shield, {}, cw);
+      EventUtils.synthesizeKey("VK_" + key, {}, cw);
+
+      executeSoon(function () {
+        ok(win.TabView.isVisible(), "tabview is still visible [" + key + "]");
+        simulateKeyPress();
+      });
+    }
+
+    SimpleTest.waitForFocus(simulateKeyPress, cw);
+  });
+}