latex not compatible with kramdown when $$ and $ in the same line

[zxteloiv]

take a sample.md file with the below content

every $\beta_i$ under the basis $\alpha_1,\dots,\alpha_n$ have coordinate: $$\begin{pmatrix}
c_{1i} \\
c_{2i} \\
... \\
c_{ni}
\end{pmatrix}$$
transition matrix: $C=(C_{ij})_{n\times n}$

using kramed 0.5.5 we get

$ ./bin/kramed ../../tmp/sample.md 

<p>every $\beta<em>i$ under the basis $\alpha_1,\dots,\alpha_n$ have coordinate: $$\begin{pmatrix}
c</em>{1i} \
c<em>{2i} \
... \
c</em>{ni}
\end{pmatrix}$$
transition matrix: $C=(C<em>{ij})</em>{n\times n}$</p>

using kramdown 1.5 we get

$ kramdown sample.md

<p>every $\beta_i$ under the basis $\alpha_1,\dots,\alpha_n$ have coordinate: <script type="math/tex">\begin{pmatrix}
c_{1i} \\
c_{2i} \\
... \\
c_{ni}
\end{pmatrix}</script>
transition matrix: $C=(C_{ij})_{n\times n}$</p>

I could rewrite the $$ block in a new line instead but I do need some inline function. Hope this could be fixed.