title: CheckBox in SAPUI5 xml view not shown as checked
body: <p>I have placed a checkbox in my SAPUI5 xml view as follows:</p>
  
  <pre><code>&lt;CheckBox checked="true" editable="false"/&gt;
  </code></pre>
  
  <p>However, the checkbox is shown as <strong>unchecked</strong>. Looking at the reference, <code>"checked"</code> is a boolean field; I cannot see anything wrong in above code.</p>
  
  <p>Reference:
  <a href="https://sapui5.hana.ondemand.com/sdk/test-resources/sap/ui/commons/demokit/CheckBox.html#settings" rel="nofollow">https://sapui5.hana.ondemand.com/sdk/test-resources/sap/ui/commons/demokit/CheckBox.html#settings</a></p>
  
  <p>What's the matter?</p>