title: JFace TableViewer shows two tooltips - custom and default
body: <p>I got a strange situation here where I need help.</p>
  
  <p>I create a fairly simple JFace Table using a <code>TableViewer</code>. When you do nothing more, you can see the following behavior: when a cell's text is too large, a tooltip showing the complete text will appear after a short wait. That's normal behavior and I guess that the native controls draw these tooltips.</p>
  
  <p>Now I added my own custom tooltips, using</p>
  
  <pre><code>ColumnViewerToolTipSupport.enableFor( tableViewer, ToolTip.NO_RECREATE );
  </code></pre>
  
  <p>And delivering a (different) text using <code>getToolTipText()</code> method of a label provider.</p>
  
  <p>That works - almost. I got one problem: sometimes (not all the times!) first, the native tooltip appears and shortly thereafter my custom tooltip is drawn on top of it, like shown in this screenshot:</p>
  
  <p><img src="https://i.stack.imgur.com/cnYr1.png" alt="Screenshot showing two tooltips"></p>
  
  <p>I have no idea how to effectively disable the native tooltips each cell wants to draw. It's ugly as hell the way it is...</p>
  
  <p>Any clues for me? </p>