diff --git a/app/assets/javascripts/app/controllers/ticket_zoom.js.coffee b/app/assets/javascripts/app/controllers/ticket_zoom.js.coffee
index c6f6f9e88..2e508a65c 100644
--- a/app/assets/javascripts/app/controllers/ticket_zoom.js.coffee
+++ b/app/assets/javascripts/app/controllers/ticket_zoom.js.coffee
@@ -150,14 +150,6 @@ class App.TicketZoom extends App.Controller
       if !@editWidget || _.isEmpty( App.TaskManager.get(@task_key).state )
         @editWidget = @Edit()
 
-    # show text module UI
-    if !@isRole('Customer')
-      new App.WidgetTextModule(
-        el:   @el.find('textarea')
-        data:
-          ticket: @ticket
-      )
-
     # scroll to article if given
     if @article_id && document.getElementById( 'article-' + @article_id )
       offset = document.getElementById( 'article-' + @article_id ).offsetTop
@@ -324,6 +316,8 @@ class Edit extends App.Controller
 
   release: =>
     @autosaveStop()
+    if @subscribeIdTextModule
+      App.Ticket.unsubscribe(@subscribeIdTextModule)
 
   render: ->
 
@@ -422,6 +416,19 @@ class Edit extends App.Controller
     # enable user popups
     @userPopups()
 
+    # show text module UI
+    if !@isRole('Customer')
+      textModule = new App.WidgetTextModule(
+        el:   @el.find('textarea')
+        data:
+          ticket: ticket
+      )
+      callback = (ticket) =>
+        textModule.reload(
+          ticket: ticket
+        )
+      @subscribeIdTextModule = ticket.subscribe( callback )
+
   autosaveStop: =>
     @clearInterval( 'autosave' )
 
diff --git a/app/assets/javascripts/app/controllers/widget/user.js.coffee b/app/assets/javascripts/app/controllers/widget/user.js.coffee
index 7ffe95c1d..ac8b48d0d 100644
--- a/app/assets/javascripts/app/controllers/widget/user.js.coffee
+++ b/app/assets/javascripts/app/controllers/widget/user.js.coffee
@@ -14,6 +14,10 @@ class App.WidgetUser extends App.ControllerDrox
 
   render: (user) =>
 
+    # execute callback on render/rerender
+    if @callback
+      @callback(user)
+
     # get display data
     userData = []
     for item2 in App.User.configure_attributes
diff --git a/test/browser/text_module_test.rb b/test/browser/text_module_test.rb
index edfeb348c..0c326c6ec 100644
--- a/test/browser/text_module_test.rb
+++ b/test/browser/text_module_test.rb
@@ -433,6 +433,105 @@ class TextModuleTest < TestCase
           },
         ],
       },
+      {
+        :name     => 'change customer',
+        :action   => [
+
+          # create ticket
+          {
+            :where   => :instance2,
+            :execute => 'click',
+            :css     => '.active .action button',
+          },
+          {
+            :execute => 'wait',
+            :value   => 1,
+          },
+          {
+            :where   => :instance2,
+            :execute => 'click',
+            :css     => '.active .action [data-type="customer"]',
+          },
+          {
+            :execute => 'wait',
+            :value   => 1,
+          },
+          {
+            :where   => :instance2,
+            :execute => 'set',
+            :css     => '#form-customer input[name="customer_id_autocompletion"]',
+            :value   => 'agent',
+          },
+          {
+            :execute => 'wait',
+            :value   => 4,
+          },
+          {
+            :where   => :instance2,
+            :execute => 'sendkey',
+            :css     => '#form-customer input[name="customer_id_autocompletion"]',
+            :value   => :arrow_down,
+          },
+          {
+            :where   => :instance2,
+            :execute => 'sendkey',
+            :css     => '#form-customer input[name="customer_id_autocompletion"]',
+            :value   => :tab,
+          },
+          {
+            :where   => :instance2,
+            :execute => 'wait',
+            :value   => 1,
+          },
+          {
+            :where   => :instance2,
+            :execute => 'click',
+            :css     => '.modal-content [type="submit"]',
+          },
+          {
+            :where   => :instance2,
+            :execute => 'wait',
+            :value   => 4,
+          },
+          {
+            :where    => :instance2,
+            :execute => 'set',
+            :css     => '.active textarea[name=body]',
+            :value   => '::' + random,
+          },
+          {
+            :execute => 'wait',
+            :value   => 1,
+          },
+          {
+            :where        => :instance2,
+            :execute      => 'match',
+            :css          => 'body',
+            :value        => random,
+            :match_result => true,
+          },
+          {
+            :where   => :instance2,
+            :execute => 'click',
+            :css     => '.-sew-list-item.selected',
+          },
+          {
+            :execute => 'wait',
+            :value   => 1,
+          },
+          {
+            :where        => :instance2,
+            :execute      => 'match',
+            :css          => '.active textarea[name=body]',
+            :value        => 'some content .+?Manag.+?' + random,
+            :no_quote     => true,
+            :match_result => true,
+          },
+
+        ],
+      },
+
+
     ]
     browser_double_test(tests)
   end