[NTG-context] superscript spacing: xits math font

Hi there, Likewise to an issue reported earlier to this list (Math & other issues for TL 2012) there seems to be a problem with the spacing of the superscript in the xits math font, which cannot be controlled via the "setupmathematics[italix=n]" option: %%% start example \setupbodyfont[xits] \starttext ${\cal P}^hx$ $P^h_mx$ $C^hx$ $W^{-1}x$ \stoptext %%% stop example For me (ConTeXt ver: 2012.08.10 00:32 MKIV fmt: 2012.8.10) these examples yield a too small spacing / negative spacing between the letter and the corresponding superscript. Any ideas? Cheers, Andreas Not quite sure if this is a pure font problem and should be sent to some other place than this list?