LaTeX not correctly rendered

Describe the bug

Some LaTeX rendering is not correctly displayed.

Matrices and column vectors are not displayed and, when they are, they look as row vectors.

Steps to reproduce (if necessary)

Steps to reproduce the behavior:

1. create a new entry and type this code

\ket{0} =\begin{pmatrix} 1 \\ 0\end{pmatrix}

3. Publish the page and look at the LaTeX code rendering.

Expected behavior

It should be displayed as a column vector but I see it as a row vector.

This is the rendering:

And this is what should look like:

Application configuration

• Single mode or Multi-user mode?

Multi User

• Database? [mysql/sqlite]

I don’t know I’m not the admin

• Open registration? [yes/no]

No. Users have to be added by admins

• Federation enabled? [yes/no]

I don’t know

Version or last commit: v0.15.0

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I would say that adding the command

\usepackage{amsmath}

to the LaTeX default runtime would solve it. I tried by doing it in my own pages but these commands are not accepted, they must be part of the runtime.

Reproduce the issue in a new entry using the provided LaTeX matrix and column-vector example, then inspect the LaTeX default runtime referenced in the report. Compare the published rendering with the expected column-vector image and verify that the finished change renders matrices and column vectors correctly.