title: emacs buffer display garbled
body: <p>Recently, my emacs editor's behavior is very strange. I could not find cause. Maybe emacs's version, or some wrong configures? </p>
  
  <p><strong><em>emacs version 24.5.1
  OS: CentOS release 6.3 (Final)</em></strong></p>
  
  <p><a href="https://i.stack.imgur.com/I00hH.gif" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/I00hH.gif" alt="enter image description here"></a>
  <strong>helm projectile find files display strangely. when delete the file path, the cursor jump disorderly.</strong></p>
  
  <p><a href="https://i.stack.imgur.com/KtmSC.gif" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/KtmSC.gif" alt="enter image description here"></a></p>
  
  <p><strong>when edit, the characters are also out-of-order ~</strong></p>