iOS: Numeric keyboard switches to alphabetic when pressing the Search (return) button using Ti.UI.SearchBar component

When I add any number in the input field using Ti.UI.SearchBar component (please see img1.png) and click on Search button the keyboard will be changed (please see img2.png).

In the simple default application in the app.js I'm using following code:

var win = Ti.UI.createWindow({

  backgroundColor: 'white'

});

var search = Titanium.UI.createSearchBar({

    barColor : '#000', 

    showCancel : true,

    height : 43,

    top : 10,

});

win.add(search);

win.open();