Hi All With the following minimal test file % test file \documentclass[11pt,twoside]{article} \usepackage{unicode-math} \begin{document} \setmathfont[math-style=TeX]{Cambria Math} \setmainfont{Cambria} $$ \underbrace{ a+b+\cdots+z }_{26} \overbrace{ 1+2+\cdots+100 }^{5050} $$ \end{document} I see odd results with Cambria Math (PDF sent with this e-mail) This is LuaTeX, Version beta-0.65.0-2010113019 (format=lualatex 2010.11.15) 30 NOV 2010 23:00 Package: fontspec 2010/11/07 v2.1d Package: unicode-math 2010/09/27 v0.5b Using regular Computer Modern there are no problems. Does anyone else see the same issue with Cambria Math? If I need to report this elsewhere (lualatex-dev) I'll do so. Cheers Graham