title: What specific things cause IE8 to trigger compatibility mode?
body: <p>I've got an app that under some circumstances causes IE8 to popup the compatibility message and reload in compat mode:</p>
  
  <blockquote>
    <p>a problem displaying  caused internet explorer to refresh the webpage
    using compatibility view</p>
  </blockquote>
  
  <p>This is rare, and does not occur due to the meta-tags, as far as I can tell.  It happens as a response to user action that alters the DOM.  This is the same problem as: <a href="https://superuser.com/questions/215281/how-do-i-stop-i-e-jumping-into-compatability-view">https://superuser.com/questions/215281/how-do-i-stop-i-e-jumping-into-compatability-view</a>, but my question is: What types of things cause this, as an aid in fixing it.</p>
  
  <p>Put another way, see this site <a href="http://www.thesitewizard.com/webdesign/prepare-your-site-for-ie8.shtml" rel="nofollow noreferrer">thesitewizard.com</a>, where a third cause of compatibility mode in IE8 is described as: </p>
  
  <blockquote>
    <p>and, on occasion, for some other unfathomable, undocumented reason, on
    pages that are validated as standards-compliant (or, at least, it does
    this in Release Candidate 1).</p>
  </blockquote>
  
  <p>And the question is: What unfathomable, undocumented reasons?</p>