\vert doesn't grow in xits-mathbold.otf

[u-fischer]

With the bold version of the math font \vert doesn't grow as expected:

\documentclass{book}
\usepackage{unicode-math}%

\begin{document}
$\big \vert \Big \vert  \bigg\vert \Bigg\vert $

\setmathfont{xits-math.otf}

$\big \vert \Big \vert  \bigg\vert \Bigg\vert $

\setmathfont{xits-mathbold.otf} %doesn't work

$\big \vert \Big \vert  \bigg\vert \Bigg\vert $

\end{document}