diff --git a/app/assets/javascripts/app/controllers/_ui_element/_application_ui_element.coffee b/app/assets/javascripts/app/controllers/_ui_element/_application_ui_element.coffee
index 546d3e29b605..674324397546 100644
--- a/app/assets/javascripts/app/controllers/_ui_element/_application_ui_element.coffee
+++ b/app/assets/javascripts/app/controllers/_ui_element/_application_ui_element.coffee
@@ -119,7 +119,7 @@ class App.UiElement.ApplicationUiElement
               list.push record
 
         # check if current value need to be added
-        if params[ attribute.name ]
+        if params[ attribute.name ] && !attribute.rejectNonExistentValues
           hit = false
           for value in list
             if value['id'].toString() is params[ attribute.name ].toString()
diff --git a/app/assets/javascripts/app/controllers/_ui_element/select.coffee b/app/assets/javascripts/app/controllers/_ui_element/select.coffee
index e8dbdf1b38c5..b72158e59b2f 100644
--- a/app/assets/javascripts/app/controllers/_ui_element/select.coffee
+++ b/app/assets/javascripts/app/controllers/_ui_element/select.coffee
@@ -1,6 +1,6 @@
 # coffeelint: disable=camel_case_classes
 class App.UiElement.select extends App.UiElement.ApplicationUiElement
-  @render: (attribute, params) ->
+  @render: (attribute, params, form = {}) ->
 
     # set multiple option
     if attribute.multiple
@@ -8,6 +8,9 @@ class App.UiElement.select extends App.UiElement.ApplicationUiElement
     else
       attribute.multiple = ''
 
+    if form.rejectNonExistentValues
+      attribute.rejectNonExistentValues = true
+
     # add deleted historical options if required
     @addDeletedOptions(attribute, params)
 
@@ -39,6 +42,7 @@ class App.UiElement.select extends App.UiElement.ApplicationUiElement
   # 2. If attribute.value is not among current and historical options, then add the value itself as an option
   @addDeletedOptions: (attribute) ->
     return if !_.isEmpty(attribute.relation) # do not apply for attributes with relation, relations will fill options automatically
+    return if attribute.rejectNonExistentValues
     value = attribute.value
     return if !value
     return if _.isArray(value)
diff --git a/app/assets/javascripts/app/controllers/agent_ticket_create.coffee b/app/assets/javascripts/app/controllers/agent_ticket_create.coffee
index f6257e467297..9245d82b1e56 100644
--- a/app/assets/javascripts/app/controllers/agent_ticket_create.coffee
+++ b/app/assets/javascripts/app/controllers/agent_ticket_create.coffee
@@ -324,11 +324,12 @@ class App.TicketCreate extends App.Controller
       events:
         'change [name=customer_id]': @localUserInfo
       handlersConfig: handlers
-      filter:         @formMeta.filter
-      formMeta:       @formMeta
-      params:         params
-      noFieldset:     true
-      taskKey:        @taskKey
+      filter:                  @formMeta.filter
+      formMeta:                @formMeta
+      params:                  params
+      noFieldset:              true
+      taskKey:                 @taskKey
+      rejectNonExistentValues: true
     )
     new App.ControllerForm(
       el:             @$('.ticket-form-bottom')
diff --git a/app/assets/javascripts/app/controllers/customer_ticket_create.coffee b/app/assets/javascripts/app/controllers/customer_ticket_create.coffee
index fb917fdb9201..fba6fb8ead5b 100644
--- a/app/assets/javascripts/app/controllers/customer_ticket_create.coffee
+++ b/app/assets/javascripts/app/controllers/customer_ticket_create.coffee
@@ -69,15 +69,16 @@ class Index extends App.ControllerContent
       handlersConfig: handlers
     )
     new App.ControllerForm(
-      el:             @el.find('.ticket-form-middle')
-      form_id:        @form_id
-      model:          App.Ticket
-      screen:         'create_middle'
-      filter:         @formMeta.filter
-      formMeta:       @formMeta
-      params:         defaults
-      noFieldset:     true
-      handlersConfig: handlers
+      el:                      @el.find('.ticket-form-middle')
+      form_id:                 @form_id
+      model:                   App.Ticket
+      screen:                  'create_middle'
+      filter:                  @formMeta.filter
+      formMeta:                @formMeta
+      params:                  defaults
+      noFieldset:              true
+      handlersConfig:          handlers
+      rejectNonExistentValues: true
     )
     if !_.isEmpty(App.Ticket.attributesGet('create_bottom', false, true))
       new App.ControllerForm(
diff --git a/public/assets/tests/form.js b/public/assets/tests/form.js
index 43c5c50b0523..11c818f9ac40 100644
--- a/public/assets/tests/form.js
+++ b/public/assets/tests/form.js
@@ -1339,6 +1339,70 @@ test("object manager form 3", function() {
 
 });
 
+test("check if select value is not existing but is shown", function() {
+
+  $('#forms').append('<hr><h1>check if select value is not existing but is shown</h1><form id="form17"></form>')
+  var el = $('#form17')
+  var defaults = {
+    select1: 'NOT EXISTING',
+  }
+  new App.ControllerForm({
+    el:        el,
+    model:     {
+      configure_attributes: [
+        { name: 'select1', display: 'Select1', tag: 'select', null: true, default: 'XY', options: { 'XX': 'AA', 'A': 'XX', 'B': 'B', 'XY': 'b', '': 'äöü' } },
+      ],
+    },
+    params: defaults,
+  });
+
+  params = App.ControllerForm.params(el)
+  test_params = {
+    select1: 'NOT EXISTING',
+  }
+  deepEqual(params, test_params)
+
+  equal('AA', el.find('[name=select1] option')[0].text)
+  equal('äöü', el.find('[name=select1] option')[1].text)
+  equal('b', el.find('[name=select1] option')[2].text)
+  equal('B', el.find('[name=select1] option')[3].text)
+  equal('NOT EXISTING', el.find('[name=select1] option')[4].text)
+  equal('XX', el.find('[name=select1] option')[5].text)
+
+});
+
+test("check if select value is not existing and is not shown", function() {
+
+  $('#forms').append('<hr><h1>check if select value is not existing and is not shown</h1><form id="form18"></form>')
+  var el = $('#form18')
+  var defaults = {
+    select1: 'NOT EXISTING',
+  }
+  new App.ControllerForm({
+    el:        el,
+    model:     {
+      configure_attributes: [
+        { name: 'select1', display: 'Select1', tag: 'select', null: true, default: 'XY', options: { 'XX': 'AA', 'A': 'XX', 'B': 'B', 'XY': 'b', '': 'äöü' } },
+      ],
+    },
+    params: defaults,
+    rejectNonExistentValues: true,
+  });
+
+  params = App.ControllerForm.params(el)
+  test_params = {
+    select1: 'XY',
+  }
+  deepEqual(params, test_params)
+
+  equal('AA', el.find('[name=select1] option')[0].text)
+  equal('äöü', el.find('[name=select1] option')[1].text)
+  equal('b', el.find('[name=select1] option')[2].text)
+  equal('B', el.find('[name=select1] option')[3].text)
+  equal('XX', el.find('[name=select1] option')[4].text)
+
+});
+
 test("time range form 1", function() {
 
   $('#forms').append('<hr><h1>time range form 1</h1><form id="form14"></form>')
diff --git a/spec/factories/template.rb b/spec/factories/template.rb
new file mode 100644
index 000000000000..59eec72f1768
--- /dev/null
+++ b/spec/factories/template.rb
@@ -0,0 +1,8 @@
+FactoryBot.define do
+  factory :template do
+    name          { Faker::Name.unique.name }
+    options       { {} }
+    updated_by_id { 1 }
+    created_by_id { 1 }
+  end
+end
diff --git a/spec/system/ticket/create_spec.rb b/spec/system/ticket/create_spec.rb
new file mode 100644
index 000000000000..3a0490792e12
--- /dev/null
+++ b/spec/system/ticket/create_spec.rb
@@ -0,0 +1,31 @@
+require 'rails_helper'
+
+RSpec.describe 'Ticket Create', type: :system do
+  context 'when applying ticket templates' do
+    # Regression test for issue #2424 - Unavailable ticket template attributes get applied
+    scenario 'unavailable attributes do not get applied', authenticated: false do
+      # create a new agent with permissions for only group "some group1"
+      user = create :agent_user
+      user.group_names_access_map = {
+        'some group1' => 'full',
+      }
+
+      # create a template that sets the group to Users and ticket owner to user id 1
+      template = create :template, options: {
+        'title'    => 'Template Title',
+        'group_id' => '1',
+        'owner_id' => '2',
+      }
+
+      # apply the ticket template and confirm that the group_id dropdown does not appear
+      login(
+        username: user.email,
+        password: 'test',
+      )
+      visit 'ticket/create'
+      find('#form-template select[name="id"]').find(:option, template.name).select_option
+      click '.sidebar-content .js-apply'
+      expect(page).not_to have_selector 'select[name="group_id"]'
+    end
+  end
+end