foo.tex
\documentclass{article}
\usepackage{cancel}
\usepackage{breqn} % <= this include is causing troubles
\begin{document}
\[\cancelto{0}{foo}\]
\end{document}
compiling produces these results
$ lualatex foo.tex
$ pdflatex foo.tex
I have no clue what is happening, since the log files are clean of any warnings/errors. Does anyone have a clue on this ?


\mathchoice– David Carlisle Oct 12 '16 at 16:30