Minimize windows when auto-hide is enabled

v2rayN/v2rayN/Views/MainWindow.xaml.cs

@@ -191,6 +191,11 @@ namespace v2rayN.Views
             this.Title = $"{Utils.GetVersion()} - {(IsAdministrator ? ResUI.RunAsAdmin : ResUI.NotRunAsAdmin)}";
 
             spEnableTun.Visibility = IsAdministrator ? Visibility.Visible : Visibility.Collapsed;
+         
+            if (_config.uiItem.autoHideStartup)
+            {
+                WindowState = WindowState.Minimized;
+            }
         }
 
         #region Event