I noticed that LaTeX spacing commands are not working as expected.

For example:

• $1\,\mathrm{J}$ → renders incorrectly, \, becomes a comma.
• $1\\,\mathrm{J}$ → \\, is rendered as a thin space, but this is actually incorrect LaTeX syntax; the correct and expected behavior is that \, itself produces the thin space.

I get the same issue with KaTeX, MathJax2, and MathJax3. I also found a related problem mentioned in one of the comments under #3786 by the repository owner, so maybe it’s the same root cause.

Just wondering: is there any plan to fix this bug shortly?