title: Second subplot disappearing
body: <p>I have a weird (and probably simple to solve) problem. I tried to plot (using panel) two plots:</p>
  
  <pre><code>a1 = subplot(2,1,1, 'Parent', handles.cpd_plot, 'Position', [0.1, 0.4, 0.85, 0.45]);
  a2 = subplot(2,1,2, 'Parent', handles.cpd_plot, 'Position', [0.1, 0.1, 0.85, 0.15]);
  </code></pre>
  
  <p>but after plotting a2, a1 disappears. I see that its some problem with position, when I lift up a1 a bit (<code>'Position', [0.1, 0.5, 0.85, 0.45]</code>) its working (but it has to be >= 0.5). Where is the problem?
  Thanks!</p>