I am currently working with formulas in MathML (it is a requirement, the data comes this way from the backend, I cant edit the database):

I am using MathJax in react with better-react-mathjax for render the formula and when trying to use the render does not show opening tags when using the mfenced tag with its property open='{' (the mfenced properity is automatic generate in python):

Looking in the documentation I found that mfenced is a deprecated tag, but in the MathJax documentation it is mentioned that it has support for MathLm, the same thing happens in the better-react-mathjax documentation; any idea or solution? Thank you!

versions: "react": "^17.0.2" "better-react-mathjax": "^2.0.1"