We could not keep it activated since it creates conflict with Stack maths assesment , a custom question plugin.
To whoever it might interest, the plugin neutralize the mathjax render of latex equations that students types in the input box.
It is possible that the problem is with filter_embeddedquestion that displays questions in iframes. The courserating JS/CSS is loaded multiple times on the same page
hoping that this can resolve an issue reported in the comment on https://moodle.org/plugins/tool_courserating :
It is possible that the problem is with filter_embeddedquestion that displays questions in iframes. The courserating JS/CSS is loaded multiple times on the same page