Testing

[Over_score]

\displaystyle\sum_{n=1}^\infty \frac{1}{n^2}=\frac{\pi^2}{6}:
\(\displaystyle\sum_{n=1}^\infty \frac{1}{n^2}=\frac{\pi^2}{6}\)

\underset{n=1}{\overset{\infty}{\Sigma}} \frac{1}{n^2}=\frac{\pi^2}{6}:
\(\underset{n=1}{\overset{\infty}{\Sigma}} \frac{1}{n^2}=\frac{\pi^2}{6}\)

\sqrt{6 \underset{n=1}{\overset{\infty}{\Sigma}} \frac{1}{n^2}}=\pi:
\(\sqrt{6 \underset{n=1}{\overset{\infty}{\Sigma}} \frac{1}{n^2}}=\pi\)

The square root is not well rendered.

[Over_score]

Seems to be better with chrome than with firefox!

[Over_score]

Firefox rendering:


Chrome rendering:

[rprosperi]

FYI - I'm using FF on Windows and the square root symbol looks fine to me, that is to say, on my FF, the image in your original post just above this one looks the same as you show for "Chrome rendering".

[dlachieze]

FYI - I'm using FF on Windows and the square root symbol looks fine to me, that is to say, on my FF, the image in your original post just above this one looks the same as you show for "Chrome rendering".

Same here with FF 81 on Android, I don't see any difference in the rendering between FF and Chrome.

[Dan Simpson]

It looks great on macOS 10.15.7 with Safari Version 14.0 (15610.1.28.1.9, 15610)

[pcscote]

It looks great on macOS 10.15.7 with Safari Version 14.0 (15610.1.28.1.9, 15610)

Same here! ... also look great with Firefox 81.0 and Chrome 85.0.4183.121.