title: OpenUI5 SplitApp cancel navigation
body: <p>I want to be able to cancel navigation in a SplitApp control. The documentation indicates I can use the <a href="https://openui5.hana.ondemand.com/#docs/api/symbols/sap.m.SplitContainer.html#event:detailNavigate" rel="nofollow">detailNavigate</a> event and use the preventDefault method to do this - but it does not seem to work.</p>
  
  <p>I have created a <a href="http://jsbin.com/zujado/2/edit?js,output" rel="nofollow">sample on jsbin</a> that shows the issue. The oEvent.preventDefault() call is executing with each navigation but it does not cancel the navigation request as I expect.</p>