Merge branch 'm43'

src/public/app/services/app_context.js

@@ -11,6 +11,7 @@ import Component from "../widgets/component.js";
 import keyboardActionsService from "./keyboard_actions.js";
 import MobileScreenSwitcherExecutor from "../widgets/mobile_widgets/mobile_screen_switcher.js";
 import MainTreeExecutors from "./main_tree_executors.js";
+import protectedSessionHolder from "./protected_session_holder.js";
 
 class AppContext extends Component {
     constructor(isMainWindow) {
@@ -111,6 +112,8 @@ const appContext = new AppContext(window.glob.isMainWindow);
 
 // we should save all outstanding changes before the page/app is closed
 $(window).on('beforeunload', () => {
+    protectedSessionHolder.resetSessionCookie();
+
     appContext.triggerEvent('beforeUnload');
 });