diff --git a/app/js/lib/ng_utils.js b/app/js/lib/ng_utils.js
index 23aff7c2..66379954 100755
--- a/app/js/lib/ng_utils.js
+++ b/app/js/lib/ng_utils.js
@@ -1029,6 +1029,9 @@ angular.module('izhukov.utils', [])
       hidden = 'webkitHidden'
       visibilityChange = 'webkitvisibilitychange'
     }
+    if (!Config.Mobile) {
+      visibilityChange = ''
+    }
 
     return {
       start: start
diff --git a/app/js/lib/schema.tl b/app/js/lib/schema.tl
index 99f0a2ae..d8a48575 100644
--- a/app/js/lib/schema.tl
+++ b/app/js/lib/schema.tl
@@ -833,7 +833,7 @@ auth.resendCode#3ef1a9bf phone_number:string phone_code_hash:string = auth.SentC
 auth.cancelCode#1f040578 phone_number:string phone_code_hash:string = Bool;
 auth.dropTempAuthKeys#8e48a188 except_auth_keys:Vector<long> = Bool;
 
-account.registerDevice#f75874d1 token_type:int token:string other_uids:Vector<int> = Bool;
+account.registerDevice#01280460 token_type:int token:string app_sandbox:Bool other_uids:Vector<int> = Bool;
 account.unregisterDevice#3076c4bf token_type:int token:string other_uids:Vector<int> = Bool;
 account.updateNotifySettings#84be5b93 peer:InputNotifyPeer settings:InputPeerNotifySettings = Bool;
 account.getNotifySettings#12b3ad31 peer:InputNotifyPeer = PeerNotifySettings;
diff --git a/app/js/services.js b/app/js/services.js
index e4a58fac..f253f63e 100755
--- a/app/js/services.js
+++ b/app/js/services.js
@@ -3398,6 +3398,8 @@ angular.module('myApp.services', ['myApp.i18n', 'izhukov.utils'])
           $rootScope.$broadcast('stateSynchronized')
           updatesState.syncLoading = false
         }
+      }, function () {
+        updatesState.syncLoading = false
       })
     }
 
@@ -4083,6 +4085,14 @@ angular.module('myApp.services', ['myApp.i18n', 'izhukov.utils'])
 
       if ('Notification' in window) {
         try {
+          if (data.tag) {
+            angular.forEach(notificationsShown, function (notification) {
+              if (notification &&
+                  notification.tag == data.tag) {
+                notification.hidden = true
+              }
+            })
+          }
           notification = new Notification(data.title, {
             icon: data.image || '',
             body: data.message || '',
@@ -4160,6 +4170,7 @@ angular.module('myApp.services', ['myApp.i18n', 'izhukov.utils'])
         }
         try {
           if (notification.close) {
+            notification.hidden = true
             notification.close()
           }
           else if (notificationsMsSiteMode &&