Dear list,

The math kerning seems to be broken in recent versions of LuaTeX.  When I
process the MWE below with TeX Live 2017 (LuaTeX 1.0.4) I get a different result
from the latest beta (LuaTeX 1.07.0).  However, I could only observe this
behaviour with some fonts, e.g. stixtwo or lucidaot.  No difference was
encountered for modern and xits.

Cheers, Henri

---

\setupbodyfont[stixtwo] % or lucidaot
\startTEXpage
$V_A$
\stopTEXpage