Dear list, I posted this question on stack exchange (https://tex.stackexchange.com/q/369226/52406), and got the suggestion that it might be a bug, and therefore I post it here as well: I have a problem with typesetting derivatives (and latin modern) in ConTeXt in latest standalone. Minimal example: \starttext Compare $u_p''$ and $u''_p$ with $u''$ \stoptext Please see the attached image for the output (here I have also included the corresponding output, compiling a similar simple document in LaTeX, where things look as I expect.) Basically, I have two questions: 1) How should I write derivatives (say second derivatives) in ConTeXt? I think that the primes are too far away from each other. In particular when the subscript $p$ is there (the first formula). 2) The math font looks strange (or should I say different) in the ConTeXt example. (Wrong size, scaled?) For a while I thought that the second problem might be because I define no font. But the following example gives a similar result. \definefontfamily[myface][rm][Latin Modern Roman] \definefontfamily[myface][mm][Latin Modern Math] \setupbodyfont[myface] \starttext Compare $u_p''$ and $u''_p$ with $u''$ \stoptext Any ideas? /Mikael
