title: getBindingContext Returns Undefined
body: <p>We've app/page that is running from a long time without any intervention... But now we're getting an error every time we execute the <code>.getBindingContext()</code> on the Detail Screen (Master Detail app).</p>
  
  <pre class="lang-js prettyprint-override"><code>savelikes: function (evt) {
    bundle = this.getView().getModel("i18n").getResourceBundle();
    var oView = this.getView();
    // evt.getSource().getSelectedItem().getBindingContext("modelData").getObject();
    var bindingContext = this.getView().getBindingContext();
    var me1 = this.getView().getBindingContext().getModel();
    var me2 = this.getView().getBindingContext().getPath();
    // ...
  },
  </code></pre>
  
  <p>Error message:</p>
  
  <p><a href="https://i.stack.imgur.com/wGF9s.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wGF9s.png" alt="Print screen"></a></p>
  
  <hr>
  
  <p>PS: We are not running the libraries locally, we're bootstrapping from the OpenUI5 (on index.html) with the URL: <a href="https://openui5.hana.ondemand.com/resources/sap-ui-core.js" rel="nofollow noreferrer">https://openui5.hana.ondemand.com/resources/sap-ui-core.js</a>.</p>
  
  <p>Any clues?</p>