It appears that DragMath is not available in the Moodle.org forum' editors, though TeX is turned on.
Could someone point me to any docs or discussion about this?
So that means that no Tex outside of the Math forum will be parsed?
What TeX do you now have installed?
Might it not be more appropriate at this point to provide access to TeX via MathJax as discussed in that forum, which would give access to TeX to those interested in discussing matters beyond Math?