Once you’ve done the above, delete everything above this line.
Steps to reproduce
on an sandbox vault, where the file has the following contents:
$$
\set{
$$
or using the developer api/console,
window.MathJax.tex2chtml("\set{")
Did you follow the troubleshooting guide?
yes? don’t know if this belongs to developer api or bug reports.
Expected result
in reading/livepreview mode expect the output to be yellow highlighted with the font color red.
Actual result
\set{ in plain text
Environment
Not system related.
Additional information
This is a bug from mathjax see #3447 in the mathjax repo for the original issue and #1365 in the mathjax-src repo for the pr fix.