What I meant by that is that, in WP, if I leave an app running, and then come back to the home screen and tap on that app's tile, it will start a new instance;

What I meant by that is that, in WP, if I leave an app running, and then come back to the home screen and tap on that app's tile, it will start a new instance; not resume the old one. Also, WP closes apps way too early in the background.