Fixes #3726 - It should be possible to show attributes which are configured shown false.

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

@@ -32,6 +32,12 @@ class App.FormHandlerCoreWorkflow
         result.push(screen)
     return result
 
+  # returns if the object and screen is controlled by core workflow
+  @checkScreen: (checkObject, checkScreen) ->
+    for object, screens of coreWorkflowScreens
+      return true if checkObject is object && _.contains(screens, checkScreen)
+    return false
+
   # returns active Core Workflow requests. it is used to stabilize tests
   @getRequests: ->
     return coreWorkflowRequests

app/assets/javascripts/app/models/_application_model.coffee

@@ -224,7 +224,7 @@ set new attributes of model (remove already available attributes)
     attributesNew = {}
     if screen
       for attribute in attributes
-        if attribute && attribute.screen && attribute.screen[screen] && (!_.isEmpty(attribute.screen[screen]) && (attribute.screen[screen].shown is true || attribute.screen[screen].shown is undefined))
+        if attribute && attribute.screen && attribute.screen[screen] && (!_.isEmpty(attribute.screen[screen]) && (attribute.screen[screen].shown is true || attribute.screen[screen].shown is undefined || App.FormHandlerCoreWorkflow.checkScreen(@.className, screen)))
           for item, value of attribute.screen[screen]
             attribute[item] = value
           attributesNew[ attribute.name ] = attribute

app/assets/javascripts/app/views/generic/attribute.jst.eco

@@ -1,4 +1,4 @@
-<div data-attribute-name="<%= @attribute.name %>" class="<%= @attribute.tag %> form-group<%= " form-group--block" if @attribute.style == 'block' %><%= " #{ @attribute.item_class }" if @attribute.item_class %><%= " is-required" if !@attribute.null %>"<%= " data-width=#{ @attribute.grid_width }" if @attribute.grid_width %>>
+<div data-attribute-name="<%= @attribute.name %>" class="<%= @attribute.tag %> form-group<%= " form-group--block" if @attribute.style == 'block' %><%= " #{ @attribute.item_class }" if @attribute.item_class %><%= " is-required" if !@attribute.null %><%= " is-hidden is-removed hide" if @attribute.shown == false %>"<%= " data-width=#{ @attribute.grid_width }" if @attribute.grid_width %>>
   <% if @attribute.style == 'block': %>
   <h2>
   <% end %>

app/models/core_workflow/attributes.rb

@@ -77,7 +77,7 @@ class CoreWorkflow::Attributes
       result[ attribute[:name] ] = if @payload['request_id'] == 'ChecksCoreWorkflow.validate_workflows'
                                      'show'
                                    else
-                                     screen_value(attribute, 'shown') == false ? 'hide' : 'show'
+                                     screen_value(attribute, 'shown') == false ? 'remove' : 'show'
                                    end
     end
   end

spec/system/ticket/create_spec.rb

@@ -487,4 +487,52 @@ RSpec.describe 'Ticket Create', type: :system do
       end
     end
   end
+
+  describe 'It should be possible to show attributes which are configured shown false #3726', authenticated_as: :authenticate, db_strategy: :reset do
+    let(:field_name) { SecureRandom.uuid }
+    let(:field) do
+      create :object_manager_attribute_text, name: field_name, display: field_name, screens: {
+        'create_middle' => {
+          'ticket.agent' => {
+            'shown'    => false,
+            'required' => false,
+          }
+        }
+      }
+      ObjectManager::Attribute.migration_execute
+    end
+
+    before do
+      visit 'ticket/create'
+    end
+
+    context 'when field visible' do
+      let(:workflow) do
+        create(:core_workflow,
+               object:  'Ticket',
+               perform: { "ticket.#{field_name}" => { 'operator' => 'show', 'show' => 'true' } })
+      end
+
+      def authenticate
+        field
+        workflow
+        true
+      end
+
+      it 'does show up the field' do
+        expect(page).to have_css("div[data-attribute-name='#{field_name}']")
+      end
+    end
+
+    context 'when field hidden' do
+      def authenticate
+        field
+        true
+      end
+
+      it 'does not show the field' do
+        expect(page).to have_css("div[data-attribute-name='#{field_name}'].is-hidden.is-removed", visible: :hidden)
+      end
+    end
+  end
 end