[TIMOB-25928] iOS: Closing a window with "tabBarHidden" property while modal window is open hides TabGroup bar

Ti.UI.backgroundColor = 'white';

var tabGroup = Ti.UI.createTabGroup();
var window1 = Ti.UI.createWindow({
    title: 'Window 1'
});
var tab1 = Ti.UI.createTab({
    title: 'Tab 1',
    window: window1
});

var window2 = Ti.UI.createWindow({
    title: 'Window 2'
});
var tab2 = Ti.UI.createTab({
    title: 'Tab 2',
    window: window2
});

tabGroup.addTab(tab1);
tabGroup.addTab(tab2);

tabGroup.addEventListener('open', doStuff);

tabGroup.open();

// below is test code to reproduce the issue
function doStuff() {
    Ti.API.info('START!');
    var secondWindow = Ti.UI.createWindow({
        tabBarHidden: true,
        title: "2nd window no tabbar"
    });

    var modalWindow = Ti.UI.createWindow();
    var nav = Ti.UI.iOS.createNavigationWindow({
        window: modalWindow
    });

    setTimeout(function() {
        // open tabbarhidden window in tabgroup
        tab1.openWindow(secondWindow);

        setTimeout(function() {
            // open modal
            nav.open({
                modal: true
            });

            setTimeout(function() {
                // close tabbarhidden window in tabgroup while modal is open
                secondWindow.close();

                setTimeout(function() {
                    // close modal window, now tabbar is gone
                    nav.close();
                }, 1000);
            }, 1000);
        }, 1000);
    }, 2500);
}