title: Floating QDockWidget minimum size
body: <p>I've designed a <code>QDockWidget</code> in Qt Creator. For some reasons it has a minimum size assigned (screenshot). I can change the size (e.g. to <code>0x0</code>) and save the form, but whenever I reopen the form it is reset to <code>60x38</code> . All child widgets have a minimum size of <code>0x0</code> .</p>
  
  <p>Even if I change the size in code (runtime) as here</p>
  
  <pre><code>QSize min(10, 10);
  this-&gt;ui-&gt;qw_NavigatorDockWidgetOuter-&gt;setMinimumSize(min);
  this-&gt;ui-&gt;fr_NavigatorDockWidgetInner-&gt;setMinimumSize(min);
  this-&gt;setMinimumSize(min); // QDockWidget
  </code></pre>
  
  <p>I cannot resize the <strong>floating</strong> (!) widget below a 60 width. Where is that constraint coming from and how can I reduce the width?</p>
  
  <p><img src="https://i.stack.imgur.com/yB0rr.png" alt="QtCreator"></p>