title: iFrame Resizer increases height of iFrame to infinity
body: <p>I do have a very basic setup:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>//index.js with iFrame Resizer, included frame has contentWindow api loaded
  
  $(document).ready(function() {
    $('#odbFrame').iFrameResize({
      resizeFrom: 'child',
      checkOrigin: 'false'
    });
  });</code></pre>
  <pre class="snippet-code-css lang-css prettyprint-override"><code>.container-fluid {
       padding: 0 !important;
  }
  
  #odbFrame {
      border: 0;
      width: 100%;
      height: 100%;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"&gt;&lt;/script&gt;
  &lt;!-- bootstrap --&gt;
  &lt;div class="container-fluid"&gt;
      &lt;iframe src="{$odbUrl|esc}" id="odbFrame"&gt;&lt;/iframe&gt;
  &lt;/div&gt;
  &lt;script src="index.js"&gt;&lt;/script&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>But when it loads, the page is first resized correctly but then grows to infinity.</p>
  
  <p>This is the log:  </p>
  
  <pre><code>[iFrameSizer][odbFrame] Parsed 1407 HTML elements  
  [iFrameSizer][odbFrame] Element position calculated in 183ms  
  [iFrameSizer][odbFrame] Event throttle increased to 366ms  
  [iFrameSizer][odbFrame] Trigger event lock on  
  [iFrameSizer][odbFrame] Sending message to host page  (odbFrame:1441:1853:mutationObserver)  
  [iFrameSizer][Host page: odbFrame] Received  
  [iFrameSizer]odbFrame:1441:1853:mutationObserver  
  [iFrameSizer][Host page: odbFrame] Checking connection is from: &lt;$odbUrl&gt;  
  [iFrameSizer][Host page: odbFrame] Checking height is in range 0-Infinity  
  [iFrameSizer][Host page: odbFrame] Checking width is in range 0-Infinity  
  [iFrameSizer][Host page: odbFrame] Requesting animation frame  
  [iFrameSizer][Host page: odbFrame] IFrame (odbFrame) height set to 1441px  
  [iFrameSizer][odbFrame] Trigger event cancelled: resize  
  [iFrameSizer][odbFrame] Trigger event: mutationObserver: [object HTMLDivElement] childList  
  [iFrameSizer][odbFrame] Trigger event lock off  
  [iFrameSizer][odbFrame] --  
  </code></pre>
  
  <p>And this is repeated forever (well the height keeps on growing).
  A temporary fix is to use maxHeight but that should not be needed.</p>
  
  <p>I have tried:  </p>
  
  <ol>
  <li>All of the calculateHeightMethods   </li>
  <li>Externally trigger the resize method   </li>
  </ol>
  
  <p>Both failed!</p>
  
  <p>On other pages of the same URL (both host and child), this is not the case!</p>