title: Popover inside on Table doesn't display data
body: <p>I have this table component (<a href="https://sapui5.hana.ondemand.com/#docs/api/symbols/sap.m.Table.html" rel="nofollow noreferrer">sap.m.Table</a>):</p>
  
  <pre><code>&lt;Table
      inset="false"
      items="{
          path: '/SelectExpenseDetails'
      }" &gt;
      &lt;headerToolbar&gt;
          &lt;Toolbar&gt;
              &lt;Button icon="sap-icon://cause" press="onBack" ariaLabelledBy="Atrás" /&gt;
              &lt;Button icon="sap-icon://message-information" press="showInfoExpenseItem" ariaLabelledBy="Atrás" /&gt;
              &lt;Title text="{i18n&gt;GV.APROB.EXPENSES.detail.title}" level="H2"/&gt;
  
          &lt;/Toolbar&gt;
      &lt;/headerToolbar&gt;
      &lt;columns&gt;
          &lt;Column width="7em" &gt;
              &lt;Text text="{i18n&gt;GV.APROB.EXPENSES.detail.concepto.pago}" /&gt;
          &lt;/Column&gt;
  
          &lt;Column
              width="4em"
              demandPopin="true"
              hAlign="Center"&gt;
              &lt;Text text="{i18n&gt;GV.APROB.EXPENSES.detail.monto}" /&gt;
          &lt;/Column&gt;
  
          &lt;Column width="1.5em"
              demandPopin="true"
              hAlign="Center"&gt;
  
          &lt;/Column&gt;
      &lt;/columns&gt;
      &lt;items&gt;
          &lt;ColumnListItem&gt;
  
              &lt;ObjectAttribute text="{ExpensesCategory}" /&gt;
  
              &lt;ObjectNumber
                  number="{PlanAmount}"
                  unit="{masterExpense&gt;/CurrencySymbol}" /&gt;
  
              &lt;Button icon="sap-icon://comment" press="showCommentsExpenseDetailItem" class="sapUiTinyMarginBegin"/&gt;                                          
          &lt;/ColumnListItem&gt;
      &lt;/items&gt;
  &lt;/Table&gt;
  </code></pre>
  
  <p>Function showCommentsExpenseDetailItem display the popover. Popover component is opened but it doen's display data:</p>
  
  <p>Here is code:</p>
  
  <pre><code>showCommentsExpenseDetailItem: function(event){
                  var popover = sap.ui.xmlfragment("la.incloud.rva.aprobaciones.view.components.popover-comment-item-detail", this);
                  this.getView().addDependent(popover);
                  popover.openBy(event.getSource());
              }
  </code></pre>
  
  <p>And this the XML fragment:</p>
  
  <pre><code>&lt;core:FragmentDefinition
      xmlns="sap.m"
      xmlns:core="sap.ui.core"&gt;
      &lt;Popover 
          showHeader="false"
          placement="Bottom"&gt;
          &lt;TextArea value="{Comments}" growing="true" growingMaxLines="4" width="100%"/&gt;
      &lt;/Popover&gt;
  &lt;/core:FragmentDefinition&gt;
  </code></pre>
  
  <p>I supposed that "{Comments}" is the right way of calling poperty of list items.</p>
  
  <p>It seems that I'm wrong...</p>