title: Share on Facebook - Thumbnail not showing for the first time
body: <blockquote>
    <p><code>https://www.facebook.com/sharer/sharer.php?u=http%3A%2F%2Fwww.frcc.us%2F1197%3Fv%3D3422%26f%3D5</code></p>
  </blockquote>
  
  <p>You should see it has thumbnail now. But every time I post a new link from my website (configured like the above example), the thumbnail won't show up for the first time. I have to refresh, and then the thumbnail shows.</p>
  
  <p>I should include valid og tags. When I test my links on <a href="https://developers.facebook.com/tools/debug">https://developers.facebook.com/tools/debug</a></p>
  
  <p>Sometimes it gives me error saying og:image should be bigger. Then I just have to debug it again and then the error is gone.</p>
  
  <p>og:image for all my links is the same. I have provided largest image <code>1500x1500</code>. There is no redirect when link to the image.</p>
  
  <p>Why?</p>