Too much space above and below reduced size fractions

[John02139]

\documentclass[11pt]{article}
\usepackage{unicode-math}
\setmainfont{STIX Two Text}
\setmathfont{STIX Two Math}

\begin{document}

\[  
\frac{\cos x}{\sin x} = \frac{1}{\frac{\sin x}{\cos x}}
\]

\end{document}

The separation between sin x, cos x, and the lower horizontal rule in the fraction at right is larger than in other fonts -- does not seem to be scaling with the font size

[marcianx]

Agreed. In particular, the extra space is really jarring in \textstyle

E.g. on XeTeX with

$$
{\scriptscriptstyle\frac{x}{2}}
{\scriptstyle\frac{x}{2}}
{\textstyle\frac{x}{2}}
{\displaystyle{\frac{x}{2}}}
{\scriptscriptstyle {x \atop 2}}
{\scriptstyle {x \atop 2}}
{\textstyle {x \atop 2}}
{\displaystyle {x \atop 2}}
$$

I get (especially the third one) whereas the regular LaTeX font gives something far more compact:

[tiroj]

@davidmjones Is issue still live? And is it something specific to XeTex or is there something we can do in the font to affect this?

[yjhn]

Same issue appears with LuaTeX.