title: Font loading error: downloadable font: kern: Too large subtable, table discarded
body: <p>I am trying to use the "Open sans" font into my web page, and <em>only</em> in Firefox, I get this error in console:</p>
  
  <blockquote>
    <p>downloadable font: kern: Too large subtable, table discarded</p>
  </blockquote>
  
  <p>Here is the CSS:</p>
  
  <pre><code>@font-face {
      font-family: Open Sans;
      src: url(OpenSans-Semibold.ttf);
  }
  </code></pre>