diff -r 000000000000 -r 6474c204b198 browser/components/customizableui/test/browser_969661_character_encoding_navbar_disabled.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/components/customizableui/test/browser_969661_character_encoding_navbar_disabled.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,26 @@
+/* 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/. */
+
+"use strict";
+
+
+// Adding the character encoding menu to the panel, exiting customize mode,
+// and moving it to the nav-bar should have it enabled, not disabled.
+add_task(function() {
+  yield startCustomizing();
+  CustomizableUI.addWidgetToArea("characterencoding-button", "PanelUI-contents");
+  yield endCustomizing();
+  yield PanelUI.show();
+  let panelHiddenPromise = promisePanelHidden(window);
+  PanelUI.hide();
+  yield panelHiddenPromise;
+  CustomizableUI.addWidgetToArea("characterencoding-button", 'nav-bar');
+  let button = document.getElementById("characterencoding-button");
+  ok(!button.hasAttribute("disabled"), "Button shouldn't be disabled");
+});
+
+add_task(function asyncCleanup() {
+  resetCustomization();
+});
+