title: W3 Total Cache stuck in preview mode
body: <p>When I click deploy button I get that a success message</p>
  
  <pre><code>Preview settings successfully deployed.
  </code></pre>
  
  <p>But it still says that I'm in preview mode</p>
  
  <pre><code>Preview mode is active: Changed settings will not take effect until preview mode is or . any changed settings (without deploying), or make additional changes.
  </code></pre>