Reduced count of not needed task bar rendering again.

app/assets/javascripts/app/controllers/_application_controller.coffee

@@ -555,6 +555,13 @@ class App.Controller extends Spine.Controller
   renderScreenUnauthorized: (data) ->
     @html App.view('generic/error/unauthorized')(data)
 
+  metaTaskUpdate: =>
+    App.Delay.set(
+      -> App.Event.trigger 'task:render'
+      250
+      'meta-task-update'
+    )
+
 class App.ControllerPermanent extends App.Controller
   constructor: ->
     super
@@ -745,7 +752,7 @@ class App.UpdateTastbar extends App.Controller
   update: (genericObject) ->
 
     # update taskbar with new meta data
-    App.Event.trigger 'task:render'
+    @metaTaskUpdate()
 
 class App.ControllerWidgetPermanent extends App.Controller
   constructor: (params) ->

app/assets/javascripts/app/controllers/agent_ticket_create.coffee

@@ -302,6 +302,9 @@ class App.TicketCreate extends App.Controller
     # start auto save
     @autosave()
 
+    # update taskbar with new meta data
+    @metaTaskUpdate()
+
   localUserInfo: (e) =>
 
     params = App.ControllerForm.params( $(e.target).closest('form') )

app/assets/javascripts/app/controllers/taskbar_widget.coffee

@@ -22,7 +22,7 @@ class App.TaskbarWidget extends App.Controller
     return if !@Session.get()
 
     tasks = App.TaskManager.all()
-    item_list = []
+    taskItems = []
     for task in tasks
 
       # collect meta data of task for task bar item
@@ -45,14 +45,14 @@ class App.TaskbarWidget extends App.Controller
       item = {}
       item.task = task
       item.data = data
-      item_list.push item
+      taskItems.push item
 
       # set title
       if task.active
         @title data.title
 
     @html App.view('task_widget_tasks')(
-      item_list: item_list
+      taskItems: taskItems
     )
 
     dndOptions =

app/assets/javascripts/app/controllers/ticket_zoom.coffee

@@ -208,8 +208,8 @@ class App.TicketZoom extends App.Controller
             objectName: 'Ticket'
           )
 
-        # update current task title
-        App.Event.trigger 'task:render'
+        # update taskbar with new meta data
+        @metaTaskUpdate()
     )
 
 
@@ -278,7 +278,8 @@ class App.TicketZoom extends App.Controller
   render: =>
 
     # update taskbar with new meta data
-    App.Event.trigger 'task:render'
+    @metaTaskUpdate()
+
     @formEnable( @$('.submit') )
 
     if !@renderDone

app/assets/javascripts/app/controllers/ticket_zoom/title.coffee

@@ -51,7 +51,7 @@ class App.TicketZoomTitle extends App.Controller
       App.TaskManager.mute(@task_key)
 
       # update taskbar with new meta data
-      App.Event.trigger 'task:render'
+      @metaTaskUpdate()
 
   release: =>
     App.Ticket.unsubscribe(@subscribeId)

app/assets/javascripts/app/lib/app_post/task_manager.coffee

@@ -64,7 +64,7 @@ class App.TaskManager
       _instance ?= new _taskManagerSingleton
     _instance.TaskbarId()
 
-class _taskManagerSingleton extends Spine.Module
+class _taskManagerSingleton extends App.Controller
   @include App.LogInclude
 
   constructor: (params = {}) ->
@@ -217,7 +217,7 @@ class _taskManagerSingleton extends Spine.Module
     @startController(params)
 
     if !params.init
-      App.Event.trigger 'task:render'
+      @metaTaskUpdate()
 
   startController: (params) =>
 
@@ -324,7 +324,7 @@ class _taskManagerSingleton extends Spine.Module
 
     # rerender taskbar
     if rerender
-      App.Event.trigger 'task:render'
+      @metaTaskUpdate()
 
     # destroy in backend storage
     @taskDestroy(task)
@@ -387,7 +387,7 @@ class _taskManagerSingleton extends Spine.Module
     App.Taskbar.deleteAll()
 
     # rerender task bar
-    App.Event.trigger 'task:render'
+    @metaTaskUpdate()
 
   nextTaskUrl: =>
 
@@ -418,7 +418,7 @@ class _taskManagerSingleton extends Spine.Module
   taskUpdate: (task) ->
     #@log 'notice', "UPDATE task #{task.id}", task
     @tasksToUpdate[ task.key ] = 'toUpdate'
-    App.Event.trigger 'task:render'
+    @metaTaskUpdate()
 
   taskUpdateLoop: =>
     return if @offlineModus

app/assets/javascripts/app/views/task_widget_tasks.jst.eco

@@ -1,4 +1,4 @@
-<% for item in @item_list: %>
+<% for item in @taskItems: %>
   <a href="<%- item.data.url %>" title="<%= item.data.title %>" class="nav-tab task <%= item.data.class %><% if item.task.active: %> is-active<% end %><% if item.task.notify: %> is-modified<% end %>" data-key="<%- item.task.key %>">
     <div class="nav-tab-icon" title="<%- @Ti(item.data.iconTitle) %>">
       <% if item.data.type is 'task': %>

test/browser_test_helper.rb

@@ -980,6 +980,7 @@ wait untill text in selector disabppears
       begin
         if instance.find_elements( { css: '.navigation .tasks .task:first-child' } )[0]
           instance.mouse.move_to( instance.find_elements( { css: '.navigation .tasks .task:first-child' } )[0] )
+          sleep 0.1
           click_element = instance.find_elements( { css: '.navigation .tasks .task:first-child .js-close' } )[0]
           if click_element
             click_element.click