Source: mathjax Followup-For: Bug #989649 It's not always so simple as adding the conf.py patch.
For the example of fenics-dolfinx 0.3.0-3 (in experimental), the lintian privacy-breach-generic warning complains about https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js But there is no local tex-mml-chtml.js file to replace it with.