title: why doesn't mathtype show the correct formula in the browser?
body: <p>I am using mathjax and mathtype to put some formula in my webpage. But for the following formula, the browser put it in a bordered square and shows the Tex text instead.</p>
  
  <blockquote>
    <p>$$\left\langle {\Psi }  \mathrel{\left | {\vphantom {\Psi  \Phi }} 
    \right. \kern-\nulldelimiterspace}  {\Phi } \right\rangle $$</p>
  </blockquote>
  
  <p>Any help to solve this problem is greatly appreciated.</p>