A normal table has exactly the same problem. I saw it in oef exercises
where the answer is given in a table : In fact exactly the example !
(it is perhaps a bog of the browser, here firefox. Does not occur with safari,
on chrome, there is no mathml).
\statement{
<table><tr><td>\(x+1/2\)
=\embed{r1}</td></tr>
</table>
}
\answer{}{1/2}{type=numeric}The source is
<table><tr><td>
<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mstyle id="wims_mathml242463" mathsize="120%"><mi>x</mi><mo>+</mo><mstyle displaystyle="true"><mfrac><mrow><mn>1</mn></mrow><mrow><mn>2</mn></mrow></mfrac></mstyle></mstyle></math> =
<input size="20" name="reply1" value="" />
</td></tr> </table>
<table><tr><td>
<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mstyle id="wims_mathml944784" mathsize="120%"><mi>x</mi><mo>+</mo><mn>5</mn><mo>+</mo><mstyle displaystyle="true"><mfrac><mrow><mn>1</mn></mrow><mrow><mn>2</mn></mrow></mfrac></mstyle></mstyle></math> =
<input size="20" name="reply1" value="" />
</td></tr> </table>