title: Constantly getting "Project Files Changed" messages in PyCharm, even though I haven't changed any of the files in my project
body: <p>Pretty much what it says in the title- I am constantly getting "Project Files Changed" messages in PyCharm. The exact message is:</p>
  
  <blockquote>
    <p>Project components were changed externally and cannot be reloaded:</p>
    
    <p>RunManager</p>
    
    <p>Would you like to reload project?</p>
  </blockquote>
  
  <p>For example, Alt-Tabbing out of PyCharm for a few seconds and then Alt-Tabbing back in is likely to generate the message. It usually doesn't occur unless I switch to another application, although sometimes it does anyways.</p>
  
  <p>Kinda stumped. Anybody seen this before?</p>
  
  <p>Any input would be appreciated!</p>