iOS navGroup detail window overlay main window

Hi! When I open detailView window, its overlay on mainView. I can't explain how it work with my english :( I made video, please help fix it.

In both window used tableview with labels.

Some code:

function ApplicationWindow() {
 
    var MasterView = require('ui/common/MasterView'),
    DetailView = require('ui/common/DetailView');
 
    var self = Ti.UI.createWindow();
 
    var masterView = new MasterView(),
        detailView = new DetailView();
 
    var masterContainerWindow = Ti.UI.createWindow({
            title:'????-????'
        });
    masterContainerWindow.add(masterView);  
 
    var detailContainerWindow = Ti.UI.createWindow({
        title:'???????'
    });
    detailContainerWindow.add(detailView);
 
    var navGroup = Ti.UI.iPhone.createNavigationGroup({
        window:masterContainerWindow
    });
    self.add(navGroup);
 
    masterView.addEventListener('itemSelected', function(e) {
        detailView.fireEvent('itemSelected',e);
        navGroup.open(detailContainerWindow);
    });
}