title: Netbeans screen artifacting
body: <p>I have noticed recently that in net beans sometimes lines are left on the screen and aren't cleaned up. I cant get a screen shot for some reason so an image from my phone will have to do:</p>
  
  <p><img src="https://i.stack.imgur.com/64Rvo.jpg" alt="Here"></p>
  
  <p>Is there a setting I need to change, or something? or is it a problem with my monitor?</p>