$location.search will stop working with null

src/Umbraco.Web.UI.Client/src/common/services/contenteditinghelper.service.js

@@ -239,7 +239,8 @@ function contentEditingHelper($location, $routeParams, notificationsService, ser
                 // /belle/#/content/edit/9876 (where 9876 is the new id)
 
                 //clear the query strings
-                $location.search(null);
+                $location.search("");
+                
                 //change to new path
                 $location.path("/" + $routeParams.section + "/" + $routeParams.tree  + "/" + $routeParams.method + "/" + id);
                 //don't add a browser history for this

src/Umbraco.Web.UI.Client/src/views/common/navigation.controller.js

@@ -85,7 +85,7 @@ function NavigationController($scope,$rootScope, $location, $log, navigationServ
             //add action to the history service
             historyService.add({ name: n.name, link: n.routePath, icon: n.icon });
             //not legacy, lets just set the route value and clear the query string if there is one.
-            $location.path(n.routePath).search(null);
+            $location.path(n.routePath).search("");
         }
     });