Math Environment Breaks Table of Contents

[Enough7]

What's the problem

Hey, I just noticed a weird bug. It will probably occur very rarely.

Given the following file:

# Regression
$$
\end{bmatrix*} \\
=
$$

will print this Table of Contents

- [Regression](#regression)
- [\\end{bmatrix\*} \\](#endbmatrix-)

What's the expected result

- [Regression](#regression)

How to reproduce

1. Enter:

   # Regression
   $$
   \end{bmatrix*} \\
   =
   $$

2. Enter CTRL + P and run command markdown.extension.toc.create

Other information

If a new line is inserted after the \end{bmatrix*} \\ it works just fine. Like:

# Regression
$$
\end{bmatrix*} \\

$$