<!DOCTYPE html>
<html>
   <head>
     <meta charset="utf-8"/>
     <title>Test dynamically removing movablelimits attribute</title>
   </head>
   <body>
    <math>
      <munder>
        <mo>∑</mo>
        <mi>x</mi>
      </munder>
    </math>
   </body>
 </html>