math formula issues

[iamliukaifang]

Thanks for your extension Mathplus first, I pretty like it. Here, I found some issues maybe helpful to improve Mathplus in the future:

1. Can't get braces:
   ${, }, $, & $ <---- $\{, \}, \$ $,\ \& $.
   ${x} $&lt;----$\{x\}$

2. Strange problem. if I put the following equation into one line, they fail to show correctly

   $\sum_{i=1}^{n}$, $\prod_{i=1}^{n}$ <----$\sum_{i=1}^{n}$, $\prod_{i=1}^{n}$,

   But If I separate them into two lines with an empty line, they look good:

   $\sum_{i=1}^{n}$,

   $\prod_{i=1}^{n}$

   (text is here)

   $\sum_{i=1}^{n}$,   
   
   $\prod_{i=1}^{n}$,
   

[SeRazon]

Problem known, pending resolution.
It will probably be fixed by 8 months.