Square root vertical formatting of Greek letter mu divided by Greek letter epsilon looks bad

And with MathML syntax in the equation editor

using:

<?xml version="1.0"?>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<msqrt>
<mstyle displaystyle="false">
<mfrac linethickness="thin">
<mrow>
<msub><mi>&mu;</mi><mn>0</mn></msub>
</mrow>
<mrow>
<msub><mi>&straightepsilon;</mi><mn>0</mn></msub>
</mrow>
</mfrac>
</mstyle>
</msqrt>
</math>



MathType installs math fonts that will play heavily in the formation of its equation appearance. The equation editor in Keynote, has no such math fonts and is restricted by the blahtex conversion and its limited TeX keyword support.

The following was created in Keynote 9.1 using the built-in equation editor:

using:

\textstyle\mathsf{\sqrt{{\mu_0}\over{\epsilon_0}}}