title: Jqgrid - hidden columns does not work
body: <p>My colmodel definition looks like follows:</p>
  
  <pre><code>&lt;c name='NewShippingAddressCity' index='NewShippingAddressCity' align='left' sortable='false' hidden='true' width='150'&gt;&lt;/c&gt;
  </code></pre>
  
  <p>but I don't know why this column is still visible. What should I change to hide it?</p>
  
  <p>I use jqgrid 4.4.0</p>
  
  <p>EDIT 1
  It looks like from some reaseon hidden attribute becomes 'undefined' so te javascript sets it to false instead of true.</p>