title: Which widget can be used as a root widget (supports Text) in a new route without covering the entire screen in Flutter?
body: <p>I am creating a new page route <code>PopupRoute</code> and using a <code>Stack</code> as the root of the new popup page. It works fine until I add <code>Text</code> to its children. Text will have two yellow lines underneath. I tried <code>Material(child:Stack())</code> and <code>Scaffold(child:Stack())</code>. It can fix the yellow line issue, but it covers the entire screen and make the barrierDismissible <strong>not</strong> work.</p>
  <p>Are there any other widgets can solve the Text yellow issues in my case?</p>