title: Rendering of buttons with images in Eclipse Kepler is broken
body: <p>With Kepler, the buttons in the Console view are sometimes rendered like this:</p>
  
  <p><img src="https://i.stack.imgur.com/xBnDv.png" alt="enter image description here"></p>
  
  <p>when it should look like this:</p>
  
  <p><img src="https://i.stack.imgur.com/STysI.png" alt="enter image description here"></p>
  
  <p>Moving once over the buttons with the mouse fixes the problem. Any idea what could be causing this?</p>
  
  <p>Versions:</p>
  
  <ul>
  <li>Eclipse Kelper SR1 (20130919-0819)</li>
  <li>Linux Kubuntu 13.04 raring</li>
  <li>libgtk2.0-bin: 2.24.17-0ubuntu2</li>
  </ul>