Settings: do the same-path check after the main page special-case.

chrome/browser/resources/options/options_page.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 cr.define('options', function() {
   /** @const */ var FocusOutlineManager = cr.ui.FocusOutlineManager;
 
   /////////////////////////////////////////////////////////////////////////////
   // OptionsPage class:
 
@@ skipping 218 matching lines @@
     if (OptionsPage.isDialog)
       return;
 
     var page = this.getTopmostVisiblePage();
     var path = window.location.pathname + window.location.hash;
     if (path)
       path = path.slice(1).replace(/\/(?:#|$)/, '');  // Remove trailing slash.
 
     // The page is already in history (the user may have clicked the same link
     // twice). Do nothing.
-    if (path == page.name && !OptionsPage.isLoading())
+    var hash = opt_params && opt_params.ignoreHash ? '' : window.location.hash;
+    var newPath = (page == this.getDefaultPage() ? '' : page.name) + hash;
+    if (path == newPath && !OptionsPage.isLoading())
       return;
 
-    var hash = opt_params && opt_params.ignoreHash ? '' : window.location.hash;
-
-    var newPath = (page == this.getDefaultPage() ? '' : page.name) + hash;
     var historyFunction = replace ? uber.replaceState : uber.pushState;
     historyFunction.call(uber, {pageName: page.name}, newPath);
   };
 
   /**
    * Shows a registered Overlay page. Does not update history.
    * @param {string} overlayName Page name.
    * @param {OptionPage} rootPage The currently visible root-level page.
    * @return {boolean} whether we showed an overlay.
    */
@@ skipping 754 matching lines @@
     canShowPage: function() {
       return true;
     },
   };
 
   // Export
   return {
     OptionsPage: OptionsPage
   };
 });