title: Select2 default search box not working
body: <p>I am using  select2 js
  I am just using default function, but the default search box is showing in disabled mode. i am not able to type anything in it.</p>
  
  <p>My code is</p>
  
  <pre><code>&lt;select id="type" name="type" class="form-control select2-use"&gt;
      &lt;option value=""&gt;select type&lt;/option&gt;
      &lt;option value="U"&gt;User&lt;/option&gt;
      &lt;option value="A"&gt;Admin&lt;/option&gt;
  &lt;/select&gt;
  
  $('.select2-use').select2({
      placeholder: "Select",
      allowClear: true
  });
  </code></pre>
  
  <p>I have included the select2.min.css and select2.min.js in my HTML page.</p>
  
  <p>There is no js errors.</p>
  
  <p>I am using this in Bootstrap modal div in which i load a HTML page</p>