I've noticed this on my iPad Mini (Retina), and I've tried to search for this "bug" elsewhere but found nothing which makes me suspect I'm the only one who's experiencing this? Whenever the push notification text is >= 3-lines, it overlaps with the "pull-down" indicator for the Notification Center. This is not a problem on my iPhone (same iOS version).
Any help or insights on why this is happening would be greatly appreciated. Thanks!