title: xtype-datetime Time dropdown is disabled
body: <p>I am using the <strong>datetime</strong> widget in one of the AEM components. The date field is working fine, however the time field appears disabled (see snapshot below).</p>
  
  <p><a href="https://i.stack.imgur.com/0vM3p.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0vM3p.png" alt="enter image description here"></a></p>
  
  <p>The field configuration is </p>
  
  <pre><code>&lt;startdatetime
      jcr:primaryType="cq:Widget"
      dateFormat="d/M/Y"
      fieldLabel="Start Date/Time"
      name="./startdatetime"
      xtype="datetime" /&gt;
  </code></pre>