title: Strange Vim inner borders
body: <p>I'm using gVIM with Windows 8, and since first time I opened it theres always those strange borders at right and bottom sides:</p>
  
  <p><em>normal window <a href="https://i.stack.imgur.com/i4qSX.jpg" rel="noreferrer">[full size image]</a></em>
  <img src="https://i.stack.imgur.com/i4qSX.jpg" alt="gVIM borders"></p>
  
  <p><em>fullscreen <a href="https://i.stack.imgur.com/Svi7N.jpg" rel="noreferrer">[full size image]</a> - even bigger borders, look at the green dotted area at right and bottom</em>
  <img src="https://i.stack.imgur.com/Svi7N.jpg" alt="gVIM borders - fullscreen"></p>
  
  <p><em>restored</em></p>
  
  <p><img src="https://i.stack.imgur.com/EoFu2.jpg" alt="gVIM borders - restored"></p>
  
  <p>Im using </p>
  
  <pre><code>set guioptions-=m
  set guioptions-=t
  set guioptions-=T
  set guioptions-=r
  set guioptions-=L
  </code></pre>
  
  <p>so no scrollbars and menus.</p>
  
  <p>Any idea of how to remove those borders as in the left side?</p>
  
  <hr>
  
  <p>Additional information: Tested in Windows XP with 1280x1024 in a 17" display.
  And Windows 8 with 1920x1080 in a 21"5, same problem.</p>