title: OData Read-Callbacks not triggered in UI5 controller
body: <p>I need a manual OData call from SAPUI5 to my SAP Gateway (without data binding).</p>
  <p>For that, I'm using the following code:</p>
  <pre class="lang-js prettyprint-override"><code>oModel.read(&quot;/ZTestSet&quot;),  
      null,null,false, function(oData, oResponse){
         alert(&quot;success&quot;);
      },
      function(oError ){
         alert(&quot;error&quot;);
  } 
  </code></pre>
  <p>I've debugged it on the SAP system. I received the call and fill the <code>et_entityset</code> with the required data.</p>
  <p>The problem is, that no function will be triggered as callback. Neither success nor error (I can't find any error on the gateway or someone else).</p>
  <p>Response in Browser's Developer Tools:</p>
  <pre><code>HEADERS:
       
  Request Method:GET
  Status Code:200 OK
       
  RESPONSE HEADERS:
  cache-control:no-store, no-cache
  Connection:keep-alive
  content-encoding:gzip
  Content-Length:827
  Content-Type:application/atom+xml; charset=utf-8
  dataserviceversion:2.0
  Date:Tue, 05 Apr 2016 12:08:34 GMT
  Proxy-Connection:keep-alive
  sap-metadata-last-modified:Tue, 05 Apr 2016 10:06:59 GMT
  
  REQUEST HEADERS:
  Accept:application/atom+xml,application/atomsvc+xml,application/xml
  Accept-Encoding:gzip, deflate, sdch
  Accept-Language:en-US
  Cache-Control:no-cache
  DataServiceVersion:2.0
  
  RESPONSE:
  &lt;feed xmlns=&quot;http://www.w3.org/2005/Atom&quot; 
   xmlns:m=&quot;http://schemas.microsoft.com/ado/2007/08/dataservices/metadata&quot; xmlns:d=&quot;http://schemas.microsoft.com/ado/2007/08/dataservices&quot; xml:base=&quot;&lt;&lt;ADDRESS&gt;&gt;&quot;&gt;
    &lt;id&gt;&lt;&lt;ADDRESS&gt;&gt;&lt;/id&gt;
    &lt;title type=&quot;text&quot;&gt;&lt;&lt;FUNCTION&gt;&gt;&lt;/title&gt;
    &lt;updated&gt;2016-04-05T12:08:34Z&lt;/updated&gt;
    &lt;author&gt;
      &lt;name /&gt;
    &lt;/author&gt;
    &lt;&lt;LIST OF ENTRIES&gt;&gt;
  &lt;/feed&gt;
  </code></pre>
  <p>Looks like a successful call.</p>