[Tim02130]

While some simple mathematical formulae do display, many do not, although I know they're there since a greyed-out placeholder label "math" is shown and the surrounding text does indicate clearly there should be a formula there. Also, a little popup at the bottom left of the viewer window says "processing math: 0%" without progressing to a higher percentage on any reasonable time scale. I presume this means that MathJax is not working on my installation, which otherwise seems just fine. Using calibre 7.26 from FlatHub running on Ubuntu 24.04 LTS. Any advice on how to fix or at least trouble shoot this will be appreciated. Otherwise I guess I'll update to the latest Ubuntu version and see if that works ...