     # set all notifications to seen
     App.OnlineNotification.seen('Ticket', @ticket_id)
 
-    # if controller is executed twice, go to latest article
+    # if controller is executed twice, go to latest article (e. g. click on notification)
     if @activeState
       @scrollToBottom()
       return

    # start autosave
    @autosaveStart()

    if !@shown

      # trigger shown to article
      App.Event.trigger('ui::ticket::shown', { ticket_id: @ticket_id })

      # observe content header position
      @positionPageHeaderStart()

  hide: =>
    @activeState = false

    if !@authenticate()
      App.TaskManager.remove(@task_key)
      return

    @form_meta            = undefined
    @ticket_id            = params.ticket_id
