[TIMOB-28523] iOS: TabGroup tab bar flickers when opening window on iOS 15

let tabGroup;

const window = Ti.UI.createWindow({ title: 'Window 1', backgroundColor: 'white' });
const btn = Ti.UI.createButton({ title: 'Open window' });

btn.addEventListener('click', () => {
	tabGroup.activeTab.open(Ti.UI.createWindow({ title: 'Window 2', backgroundColor: 'white' }));
});

window.add(btn);

tabGroup = Ti.UI.createTabGroup({
	tabs: [
		Ti.UI.createTab({
			title: 'Tab 1',
			window,
			icon: Ti.UI.createView({ width: 20, height: 20, backgroundColor: 'black' }).toImage()
		})
	]
});

tabGroup.open();