diff --git a/browser/app/profile/firefox.js b/browser/app/profile/firefox.js
index 98e3a5a2d54..65bc015462d 100644
--- a/browser/app/profile/firefox.js
+++ b/browser/app/profile/firefox.js
@@ -1033,9 +1033,6 @@ pref("devtools.styleinspector.enabled", true);
 // Enable the Tilt inspector
 pref("devtools.tilt.enabled", true);
 
-// Enable the Tilt inspector even if WebGL capabilities are not detected
-pref("devtools.tilt.force-enabled", false);
-
 // Enable the rules view
 pref("devtools.ruleview.enabled", true);
 
diff --git a/browser/base/content/browser.xul b/browser/base/content/browser.xul
index e5284b74f85..7119f676100 100644
--- a/browser/base/content/browser.xul
+++ b/browser/base/content/browser.xul
@@ -1014,8 +1014,8 @@
             <toolbarbutton id="inspector-3D-button"
                            class="devtools-toolbarbutton"
                            hidden="true"
-                           label="&inspect3DButton.label;"
-                           accesskey="&inspect3DButton.accesskey;"
+                           label="&inspect3DViewButton.label;"
+                           accesskey="&inspect3DViewButton.accesskey;"
                            command="Inspector:Tilt"/>
             <toolbarbutton id="inspector-style-button"
                            class="devtools-toolbarbutton"
diff --git a/browser/devtools/tilt/Tilt.jsm b/browser/devtools/tilt/Tilt.jsm
index 9e7d9b648aa..2b31ec3f13b 100644
--- a/browser/devtools/tilt/Tilt.jsm
+++ b/browser/devtools/tilt/Tilt.jsm
@@ -271,7 +271,7 @@ Tilt.prototype = {
   get enabled()
   {
     return (TiltVisualizer.Prefs.enabled &&
-           (TiltVisualizer.Prefs.forceEnabled || TiltGL.isWebGLSupported()));
+           (TiltGL.isWebGLForceEnabled() || TiltGL.isWebGLSupported()));
   },
 
   /**
diff --git a/browser/devtools/tilt/TiltGL.jsm b/browser/devtools/tilt/TiltGL.jsm
index cf5d2895fc7..084a5c33a4d 100644
--- a/browser/devtools/tilt/TiltGL.jsm
+++ b/browser/devtools/tilt/TiltGL.jsm
@@ -37,7 +37,7 @@
  *
  ***** END LICENSE BLOCK *****/
 
-/*global Components, TiltMath, TiltUtils, mat4 */
+/*global Components, Services, TiltMath, TiltUtils, mat4 */
 "use strict";
 
 const Cc = Components.classes;
@@ -46,6 +46,7 @@ const Cu = Components.utils;
 
 const WEBGL_CONTEXT_NAME = "experimental-webgl";
 
+Cu.import("resource://gre/modules/Services.jsm");
 Cu.import("resource:///modules/devtools/TiltMath.jsm");
 Cu.import("resource:///modules/devtools/TiltUtils.jsm");
 
@@ -1554,6 +1555,11 @@ TiltGL.ColorShader = {
   ].join("\n")
 };
 
+TiltGL.isWebGLForceEnabled = function TGL_isWebGLForceEnabled()
+{
+  return Services.prefs.getBoolPref("webgl.force-enabled");
+};
+
 /**
  * Tests if the WebGL OpenGL or Angle renderer is available using the
  * GfxInfo service.
diff --git a/browser/devtools/tilt/TiltVisualizer.jsm b/browser/devtools/tilt/TiltVisualizer.jsm
index 17f4219c586..a80287808d4 100644
--- a/browser/devtools/tilt/TiltVisualizer.jsm
+++ b/browser/devtools/tilt/TiltVisualizer.jsm
@@ -1548,20 +1548,6 @@ TiltVisualizer.Prefs = {
     this._enabled = value;
   },
 
-  /**
-   * Specifies if Tilt should be enabled even if WebGL may not be available.
-   */
-  get forceEnabled()
-  {
-    return this._forceEnabled;
-  },
-
-  set forceEnabled(value)
-  {
-    TiltUtils.Preferences.set("force-enabled", "boolean", value);
-    this._forceEnabled = value;
-  },
-
   /**
    * Loads the preferences.
    */
@@ -1570,7 +1556,6 @@ TiltVisualizer.Prefs = {
     let prefs = TiltUtils.Preferences;
 
     TiltVisualizer.Prefs._enabled = prefs.get("enabled", "boolean");
-    TiltVisualizer.Prefs._forceEnabled = prefs.get("force-enabled", "boolean");
   }
 };
 
diff --git a/browser/devtools/tilt/test/Makefile.in b/browser/devtools/tilt/test/Makefile.in
index 9c3ee17eaea..795bd885466 100644
--- a/browser/devtools/tilt/test/Makefile.in
+++ b/browser/devtools/tilt/test/Makefile.in
@@ -51,6 +51,7 @@ _BROWSER_TEST_FILES = \
 	browser_tilt_03_tab_switch.js \
 	browser_tilt_04_initialization.js \
 	browser_tilt_05_destruction-esc.js \
+	browser_tilt_05_destruction-url.js \
 	browser_tilt_05_destruction.js \
 	browser_tilt_arcball.js \
 	browser_tilt_controller.js \
diff --git a/browser/devtools/tilt/test/browser_tilt_04_initialization.js b/browser/devtools/tilt/test/browser_tilt_04_initialization.js
index 2b68c1db194..cb587d9669c 100644
--- a/browser/devtools/tilt/test/browser_tilt_04_initialization.js
+++ b/browser/devtools/tilt/test/browser_tilt_04_initialization.js
@@ -31,11 +31,6 @@ function test() {
 
         is(Tilt.visualizers[id], null,
           "A instance of the visualizer shouldn't be initialized yet.");
-
-        is(typeof TiltVisualizer.Prefs.enabled, "boolean",
-          "The 'enabled' pref should have been loaded by now.");
-        is(typeof TiltVisualizer.Prefs.forceEnabled, "boolean",
-          "The 'force-enabled' pref should have been loaded by now.");
       },
       onTiltOpen: function(instance)
       {
diff --git a/browser/devtools/tilt/test/browser_tilt_05_destruction-url.js b/browser/devtools/tilt/test/browser_tilt_05_destruction-url.js
new file mode 100644
index 00000000000..365170fa28f
--- /dev/null
+++ b/browser/devtools/tilt/test/browser_tilt_05_destruction-url.js
@@ -0,0 +1,41 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/*global ok, is, info, waitForExplicitFinish, finish, gBrowser */
+/*global isTiltEnabled, isWebGLSupported, createTab, createTilt */
+/*global Services, EventUtils, Tilt, TiltUtils, InspectorUI, TILT_DESTROYED */
+"use strict";
+
+function test() {
+  if (!isTiltEnabled()) {
+    info("Skipping destruction test because Tilt isn't enabled.");
+    return;
+  }
+  if (!isWebGLSupported()) {
+    info("Skipping destruction test because WebGL isn't supported.");
+    return;
+  }
+
+  waitForExplicitFinish();
+
+  createTab(function() {
+    createTilt({
+      onTiltOpen: function()
+      {
+        Services.obs.addObserver(cleanup, TILT_DESTROYED, false);
+        window.content.location = "about:mozilla";
+      }
+    });
+  });
+}
+
+function cleanup() {
+  let id = TiltUtils.getWindowId(gBrowser.selectedBrowser.contentWindow);
+
+  is(Tilt.visualizers[id], null,
+    "The current instance of the visualizer wasn't destroyed properly.");
+
+  Services.obs.removeObserver(cleanup, TILT_DESTROYED);
+  gBrowser.removeCurrentTab();
+  finish();
+}
diff --git a/browser/locales/en-US/chrome/browser/browser.dtd b/browser/locales/en-US/chrome/browser/browser.dtd
index e71068ce6b8..a185b173f13 100644
--- a/browser/locales/en-US/chrome/browser/browser.dtd
+++ b/browser/locales/en-US/chrome/browser/browser.dtd
@@ -217,8 +217,13 @@ can reach it easily. -->
 <!ENTITY inspectButton.label            "Inspect">
 <!ENTITY inspectButton.accesskey        "I">
 <!ENTITY inspectCloseButton.tooltiptext "Close Inspector">
-<!ENTITY inspect3DButton.label        "3D">
-<!ENTITY inspect3DButton.accesskey    "M">
+
+<!-- LOCALIZATION NOTE (inspect3DViewButton.label): This button shows an
+  -  alternate view for the Inspector, creating a 3D visualization of the
+  -  webpage. -->
+<!ENTITY inspect3DViewButton.label     "3D View">
+<!ENTITY inspect3DViewButton.accesskey "W">
+
 <!ENTITY inspectStyleButton.label     "Style">
 <!ENTITY inspectStyleButton.accesskey "S">