title: Tableview cell layout incorrectly after the tableview reloaddata
body: <p>I wonder why this happens, first I load the view like following:
  <a href="https://i.stack.imgur.com/IKrlr.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/IKrlr.png" alt="enter image description here"></a></p>
  
  <p>But after I scroll the tableview and tap the another button above the tableview which shows "趣味型返点" on title, triggering the table reload data. And the layout shows following :
  <a href="https://i.stack.imgur.com/0K0US.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0K0US.png" alt="enter image description here"></a></p>
  
  <p>It layout incorrectly, but it become correct instantly after I scroll or even tap the tableview like following:</p>
  
  <p><a href="https://i.stack.imgur.com/DmHOp.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/DmHOp.png" alt="enter image description here"></a></p>
  
  <p>Why is this happens?</p>
  
  <p>Note:The incorrect layout won't happen if I don't scroll the tableview(or scroll offset is 0 ) before I tap another to reload data.</p>