[NTG-context] Integral spacing

I get too much spacing after the integrals when using ‘context’ (TeX Live 2015) - see first example below. Cf. the second example below, compiled with luatex. In ConTeXt, the result is the same regardless of body font, and also if using original TeX \int. --- context --- \setupbodyfont[xits,10pt] %\setupbodyfont[stix,10pt] \starttext \startformula ⟨φ|ψ⟩ ≔ ∫… ∫ dx_1 … dx_n\, φ(x_1, …, x_n)^* ψ(x_1, …, x_n) \stopformula \startformula ⟨φ|ψ⟩ ≔ \int … \int dx_1 … dx_n\, φ(x_1, …, x_n)^* ψ(x_1, …, x_n) \stopformula \stoptext --- --- luatex --- $$ \left<\phi|\psi\right> = \int \ldots \int dx_1 \ldots dx_n\, \phi(x_1, \ldots, x_n)^* \psi(x_1, \ldots, x_n) $$ \end ---