Is MathJax really not working?

What’s up with MathJax? The MathJax plugin announcement here on meta indicates that it’s broken on the latest version of discourse. The edit history indicates that was months ago, though. Is there any way to get it working?

I’ve tried the standard install. Thus, my app.yml file has the following lines in the hooks section:

    - exec:
        cd: $home/plugins
          - mkdir -p plugins
          - git clone
          - git clone

The MathJax plugin appears on my list of plugins but is unselectable, as you can see:

The plugins console says that MathJax is enabled, at least, but it doesn’t seem to be working on my site.

Got it: After clicking on Change Setting -> MathJax Plugin, I found the “Enable MathJax plugin” checkbox was not checked.

Sorry for the noise!