Big operator rendering problem inside \frac

[ProSimPC]

Hello,

First I would like to say WpfMath is a wonderful library. I had searched something like this for a long time.

I went into a small rendering bug when using this kind of formula: \frac{1}{\sum{a}}
The "a" is not at the right place but looks like a superscript. It happens only when the sum is under a fraction.

Best regards,
Pierre

[ForNeVeR]

Here's how it looks:

• without \frac:
  

-with \frac:

Obviously something's wrong on our side.

[ForNeVeR]

Also, it works the same for every "big operator" (\int, \prod, etc.)

[ForNeVeR]

NOTE FOR IMPLEMENTORS: When fixing that, be careful not to break cases such as \frac{\sum^a_bx}{2}. With current implementation, it works okay. Although, it was broken by my initial naïve fix.

[ForNeVeR]

@ProSimPC, looks like I was able to fix the bug. While other maintainers are reviewing my PR, could you please tell me if it's critical for you? If it is, we could release a fix version (and push it onto NuGet) right after merging the PR.

[ProSimPC]

@ForNeVeR, it's nice to see you've found the source of the bug. It not critical at all for me, I will wait for the next release.