[CommonHTML] AMScd error

Created by: netw0rkf10w

Hello,

In a previous version of MathJax (which I do not remember), the following AMScd diagram was rendered correctly:

\begin{CD}
A @>a>b> B \\
@VlVrV @AlArA \\
C @<a<b< D
\end{CD}

but it is not the case in the current version. Could you please check? Thank you in advance.