Remove activity menu for anonymous users with login required

config/initializers/menus.rb

@@ -43,6 +43,7 @@
   menu.push :activity,
             { controller: "/activities", action: "index" },
             context: :modules,
+            if: Proc.new { User.current.logged? || !Setting.login_required? },
             icon: "history"
 
   menu.push :work_packages,

lib/redmine/menu_manager/top_menu_helper.rb

@@ -215,6 +215,8 @@ def more_top_menu_items
 
   def module_top_menu_item_groups
     items = more_top_menu_items
+    return items if items.empty?
+
     item_groups = []
 
     # add untitled group, if no heading is present

spec/features/menu_items/top_menu_item_spec.rb

@@ -138,12 +138,6 @@ def click_link_in_open_menu(title)
     context "as an anonymous user" do
       let(:user) { create(:anonymous) }
 
-      context "when login_required", with_settings: { login_required: true } do
-        it "redirects to login" do
-          expect(page).to have_current_path /login/
-        end
-      end
-
       context "when not login_required", with_settings: { login_required: false } do
         it "displays only projects, activity and news" do
           has_menu_items? project_item, activity_item, news_item