title: SAPUI5 Smartable not showing the inital fields
body: <p>I am trying to build a simple smarttable, using a CDS with annotation, I expect the columns to be displayed automatically but no column or selection field are displayed automatically. When I try to create a report with fiori element it is working fine but not with my freestyle app and smarttable. What is missing ?</p>
  <pre><code>@AbapCatalog.sqlViewName: 'ZTEST_CDS_SHP'
  @AbapCatalog.compiler.compareFilter: true
  @AbapCatalog.preserveKey: true
  @AccessControl.authorizationCheck: #CHECK
  @EndUserText.label: 'Test Shipment view'
  @VDM.viewType: #CONSUMPTION
  @VDM.private:false
  @Search.searchable: true
  @UI.headerInfo: { typeName: 'Order', typeNamePlural: 'Orders' }
  @OData.publish: true
  define view ZTESTV_CDS_SHP as select from ZRDCV_CDS_SHIPMENT 
  
  association [0..1] to ZTESTV_CDS_DCHELP as _DCValueHelp      on $projection.DcSite = _DCValueHelp.Werks
  association [0..1] to makt  as _ArticleValueHelp on $projection.Article = _ArticleValueHelp.matnr and _ArticleValueHelp.spras = $session.system_language 
  
  {
  
  @Search.defaultSearchElement: true
  @UI.selectionField: [ { position: 10 } ]
  @UI.lineItem: [ { position: 10, importance: #HIGH } ]
  key    shipment             as Shipment,
  
  
  @UI.selectionField: [ { position: 20 } ]
  @UI.lineItem: [ { position: 20, importance: #HIGH } ]
  key    exidv as Hu,
  ....
  </code></pre>
  <p>here is the XML view</p>
  <pre><code>&lt;mvc:View
      controllerName=&quot;ns.shipment1.controller.Worklist&quot;
      xmlns=&quot;sap.m&quot;
      xmlns:mvc=&quot;sap.ui.core.mvc&quot;
      xmlns:semantic=&quot;sap.f.semantic&quot;
      xmlns:smartFilterBar=&quot;sap.ui.comp.smartfilterbar&quot;
      xmlns:app=&quot;http://schemas.sap.com/sapui5/extension/sap.ui.core.CustomData/1&quot;
      xmlns:smartTable=&quot;sap.ui.comp.smarttable&quot;&gt;
  
      &lt;semantic:SemanticPage
          id=&quot;page&quot;
          headerPinnable=&quot;false&quot;
          toggleHeaderOnTitleClick=&quot;false&quot;&gt;
  
          &lt;semantic:titleHeading&gt;
              &lt;Title
                  text=&quot;{i18n&gt;worklistTitle}&quot;
                  level=&quot;H2&quot;/&gt;
          &lt;/semantic:titleHeading&gt;
  
          &lt;semantic:content&gt;
  
          &lt;!-- use this to make the table occupy the available screen height --&gt;
          &lt;VBox fitContainer=&quot;true&quot;&gt;
  
              &lt;!-- FILTER BAR ******************************************** --&gt;
              &lt;smartFilterBar:SmartFilterBar 
              id=&quot;smartFilterBar&quot; 
              entitySet=&quot;ZTESTV_CDS_SHP&quot; 
              persistencyKey=&quot;SmartFilter_Explored&quot; 
              basicSearchFieldName=&quot;Shipment&quot; 
              enableBasicSearch=&quot;true&quot; 
              visible=&quot;true&quot;
              considerSelectionVariants=&quot;true&quot;
              showFilterConfiguration=&quot;true&quot;&gt;
              &lt;/smartFilterBar:SmartFilterBar&gt;
  
  
              &lt;!-- SMART TABLE ******************************************** --&gt;
              &lt;smartTable:SmartTable 
              id=&quot;ShipmentTable&quot; 
              entitySet=&quot;ZTESTV_CDS_SHP&quot; 
              smartFilterId=&quot;smartFilterBar&quot; 
              tableType=&quot;Table&quot; 
              useExportToExcel=&quot;true&quot; 
              beforeExport=&quot;onBeforeExport&quot; 
              useVariantManagement=&quot;true&quot; 
              useTablePersonalisation=&quot;true&quot; 
              header=&quot;Shipment Items&quot; 
              showRowCount=&quot;true&quot; 
              persistencyKey=&quot;SmartTableAnalytical_Explored&quot; 
              enableAutoBinding=&quot;true&quot; 
              class=&quot;sapUiResponsiveContentPadding&quot;
              editTogglable=&quot;false&quot; 
              app:useSmartField=&quot;true&quot; 
              app:useSmartToggle=&quot;true&quot;&gt;
              &lt;/smartTable:SmartTable&gt;
  
  
          &lt;/VBox&gt;
  </code></pre>