Not sure where to report this kind of glitch, or how, but I thought I'd try with this particular one – please let me know if it's not the right place/format for such issues.

Using typst, I typeset Maxwell's equations in the last one the µ_0 near-clashes with the J. Can this spacing be tweaked please? (seems to need a bit more italic correction maybe)

https://typst.app/project/rgFsRK7NNyDtvah3QIfEVQ