Dollar ($) symbol not escaped in inline MathJax

[BenSchZA]

Is this a hackmd.io issue?

• [x] Yes, the bug happens on https://hackmd.io
• [ ] No. If it's a self-hosted CodiMD instance, please fire up the issue in the repo of CodiMD: https://github.com/hackmdio/codimd

Read our Official tutorial

It's on https://hackmd.io/c/tutorials/

或是中文版 https://hackmd.io/c/tutorials-tw/

What's the problem

Using inline MathJax/LaTeX formatting, the dollar symbol is not escaped. In multiline formatting, the dollar symbol is escaped as expected.

Current behaviour

Provide steps to reproduce:

1. Create a new document
2. Add inline MathJax formatting delimiters ($...$)
3. Add an escaped dollar symbol ($\$$)
4. See that it is not rendered correctly / is not escaped, and that the symbol is correctly rendered in multiline formatting

See note link: https://hackmd.io/@benschza/SykGbt_Vd

Expected behaviour

Symbol escaped correctly in both inline and multiline formatting.

Environment

I use HackMD on:

Desktop

• OS: macOS
• Browser: Firefox
• Browser Version: 86.0

Additional context

Add any other context about the problem here.