vmatrix can't be represented in DOCX in the right way

[retsyo]

No description provided.

[retsyo]

I am using Typora 0.9.60(beta) on win7 64 bits. For the equation

$$
\mathbf{V}_1 \times \mathbf{V}_2 =  \begin{vmatrix}
\mathbf{i} & \mathbf{j} & \mathbf{k} \\
\frac{\partial X}{\partial u} &  \frac{\partial Y}{\partial u} & 0 \\
\frac{\partial X}{\partial v} &  \frac{\partial Y}{\partial v} & 0 \\
\end{vmatrix}
$$

as the attached images said, the exported PDF does well, but DOCX has a too short vertical line which is expected to meet the red line

[abnerlee]

mathjax/MathJax#2105