<!doctype html>
<html>
  <head>
    <title>bug 95015</title>
    <meta charset="utf-8"/>
  </head>    
  <body>

    
    <!-- The msubsup should be in a supscript and so it should be hidden by the
         red rectangle. -->
    <div style="position: absolute; left: 10px; top: 0;">
      <math>
        <mrow>
          <mspace height="50px" depth="50px"/>
          <msup>
            <mphantom><mi>X</mi></mphantom>
            <mspace/>
          </msup>
        </mrow>
      </math>
    </div>
    <div style="position: absolute; left: 10px; top: -.1em;">
      <math>
        <mrow>
          <mspace height="50px" depth="50px"/>
          <mspace width="100px" height="2em" depth="0" mathbackground="red"/>
        </mrow>
      </math>
    </div>

</body>
</html>