MathJax formulas don't display correctly

[t-schroeder]

You can specify MathJax formulas as answer choices. But in the select they are not rendered correctly. Example:

That happens because the <option> element only supports text But MathJax formulas consist of a lot of HTML elements. To make them work here the plugin would need to use something other than <select> and <option>. I've read that Select2 or Chosen do work with HTML content.

Here's a sample question (unzip, then import as Moodle XML): questions-Testkurs-Lückentest-20211125-1736.zip