Testing 1 Enable mathjax filter in our sites. Disable the Tex filter Create content that has mathjax in it. Expected: Content that has mathjax is working as normal Testing 2 Enable mathjax filter in our sites. Disable the Tex filter Create a new Forum with "Whole forum grading" enabled Login as a student account. Create a forum post with content as follows (Use the HTML code mode of the editor):  \( \succeq \circ \div \pm \diamond \int_{a}^{b}{c} \iint_{a}^{b}{c} \left| \begin{matrix} a_1 & a_2 \\ a_3 & a_4 \end{matrix} \right| \) Login as a teacher account. Open the browser dev tools and locate the "Console". Press the "Grade users" button. Verify that there is no console error like: Uncaught TypeError: node.querySelectorAll is not a function