title: SAP ui5 ComboBox LIstItem not showing additionalText
body: <p>I am trying to some additional text with sapui5 ComboBox control.</p>
  
  <p>Here is my code </p>
  
  <pre><code>&lt;ComboBox&gt;
                      &lt;items&gt;
                          &lt;core:ListItem text="1" key="1" additionalText="Draft" /&gt;
                          &lt;core:ListItem text="2" key="2" additionalText="Revision"/&gt;
                      &lt;/items&gt;
                  &lt;/ComboBox&gt;
  </code></pre>
  
  <p>But its not showing the additional text . Output -
  <a href="https://i.stack.imgur.com/DLvEX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/DLvEX.png" alt="enter image description here"></a></p>
  
  <p>What is wrong with my code? Thanks</p>