title: Vim freezes consistently for several reasons
body: <p>Vim freezes and I see a key sign as I have circled in the picture below when doing the following things</p>
  
  <p><a href="https://i.stack.imgur.com/syVvq.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/syVvq.png" alt="enter image description here"></a></p>
  
  <ol>
  <li>When opening a new file in terminal vim, especially a cpp file.</li>
  <li>When terminal vim is left idle for a few seconds</li>
  <li>When I click outside the terminal window and then click back into  terminal vim.</li>
  </ol>
  
  <p>Ctrl-c unfreezes vim.</p>
  
  <p>This is 100% reproducible on terminal vim, and not reproducible at all on MacVim. I am on MacOS.</p>
  
  <p>When vim is launched from MacOS terminal app (and not iterm), I get a blinking key, and vim freezes just the same.</p>
  
  <p>Please help me unfreeze vim, I've been digging for a while and not come up with anything. </p>