fixes #13791

var win1 = Ti.UI.createWindow({
	backgroundColor: "green"
})
win1.addEventListener("click", function() {
	var win2 = Ti.UI.createWindow({
		backgroundColor: "red"
	})
	win2.open();
})
win1.open();

Steps to reproduce

• open the app (green window)
• click to open the second window (red)
• close the red window and close the green window right away
• you will see the root activity

more infos in the ticket

needs more testing but my idea is that there shouldn't be one item left as this is the base activity (the splashscreen). Perhaps there is even a better way to check which activity it is now checking for the root activity class name.

When I log the size of the activityStack it will normally go from 2 to 0 when you close the window normally. If the window has a transition (default) and you close it quickly it will go from 2 to 1 and show the app icon (see video in issue).

Updates:

• Improved the check a bit after testing it with an app that was using NFC to open a second window at start.
• Fixed some liveview issue. To test it: start the app with liveview, open the second window, save the file to trigger a liveview soft restart