Navigate to an existing course, or create a new one From the "More" menu, choose "Filters" Ensure that: The MathJax filter is On The Tex filter is Off Create a new Forum with "Whole forum grading" enabled Create a forum post with content as follows (Use the HTML mode): \( \succeq \circ \div \pm \diamond \int_{a}^{b}{c} \iint_{a}^{b}{c} \left| \begin{matrix} a_1 & a_2 \\ a_3 & a_4 \end{matrix} \right| \) Open the forum as teacher Open the browser dev tools and locate the "Console" Paste the following into the console: require(['core_filters/events'], (E) => {document.addEventListener(E.eventTypes.filterContentRenderingComplete, (e) => { window.console.log(e); window.console.log(e.detail.nodes); debugger; })}) Press the "Grade users" button Navigate to the user that made the post Confirm that the debugger stopped in your browser dev tools Confirm that the console showed a CustomEvent an an Array of nodes Confirm that the array of Nodes included your MathJax node