title: QListView icon mode not relayout when resize
body: <p>I have a QListView with IconMode view, LeftToRight flow, and wrapping is true.<br>
  But I have a problem when I resize the widget that the item is not relayout.<br>
  Is there any way to make it relayout? Many thanks for any help.</p>
  
  <p>Start listview :<br>
  <a href="https://i.stack.imgur.com/MttOX.png" rel="noreferrer"><img src="https://i.stack.imgur.com/MttOX.png" alt="List view at start"></a></p>
  
  <p><br>
  List view after resize :<br>
  <a href="https://i.stack.imgur.com/RwZ9T.png" rel="noreferrer"><img src="https://i.stack.imgur.com/RwZ9T.png" alt="after resize"></a></p>