title: Visibility widget not displayed in Flutter
body: <p>If we have a <code>Visibility</code> widget on top of our screen and we click to display it at the end of our screen scrolling top manually, why still this hidden? Does this mean that we need to do something like this instead?:</p>
  
  <pre><code>showWidget == true ? Text("hi") : Container();
  </code></pre>
  
  <p>Because code above is failing as well.</p>
  
  <p>Video of the error:
  <a href="https://youtu.be/YQ7nZ3LAENo" rel="nofollow noreferrer">https://youtu.be/YQ7nZ3LAENo</a></p>