title: How can I prevent Vim duplicating my text when I exit insert mode?
body: <p>I'm using Vim in the zsh shell on OSX.</p>
  
  <p><img src="https://i.stack.imgur.com/QnGUv.png" alt="my-image-of-my-terminal"></p>
  
  <p>In the image you can see that I have created a test text on the left side. When I exit insert mode (using <kbd>Esc</kbd>), Vim duplicates my text a few times.</p>
  
  <p>You can see my Vim editor when I exited the insert mode on the right side of the image.</p>
  
  <p>Why does Vim do that and how can I prevent it?</p>