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LuaLaTeX, with unicode-math does not seem to use the text kerning for subscripts and superscripts. I however get the kerned V-A pair with pdfLaTeX (with amsmath). Is this a bug?

\documentclass{article} % \usepackage{amsmath} \usepackage{fontsetup} \begin{document} VA \(\text{VA}\gamma_{\textnormal{VA}}, \symrm{VA}\gamma_{\symrm{VA}}, \gamma^{\textnormal{VA}}, \symrm{VA}\gamma^{\symrm{VA}}\) \end{document}

text kerning in lualatex for subscripts and subscripts

Edit: I get the same output with XeLaTeX.

Edit 2: It seems the problem does not occur for other fonts, although there are other bugs in the other fonts, such as collisions, and the correct optical size not being used for subscripts and superscripts.

sub and superscript kerning test for different fonts

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