title: radio button checked and tabindex not working together
body: <p>As title says: its not working together</p>
  
  <p>My Code:</p>
  
  <pre><code>&lt;input type="radio" name="radio{{ tr.Id }}" value="y" tabindex="{{ tabindex }}"&gt;Correct
  &lt;input type="radio" name="radio{{ tr.Id }}" checked&gt;Idk
  &lt;input type="radio" name="radio{{ tr.Id }}" value="n"&gt;Wrong
  </code></pre>
  
  <p>The tabindex is in this Code not working</p>
  
  <p>when I remove <code>checked</code> <code>tabindex=""</code> is working </p>
  
  <p>Im working with Twig and the Twig counter is correct ({{ tabindex}}) !! </p>
  
  <p>Thanks in advance for every help :)</p>
  
  <p>This Question might be a duplicate, but i just want to point out that checked and tabindex aren't working well together. Consider using a dropdown-menu as radio selection with <code>tabindex</code> and (in this case) <code>selected</code></p>