Bad size of \overrightarrow when using LuaLaTeX

[Joern-W]

Description

The size of \overrightarrow when using LuaLaTeX is wrong for some letters. In XeLaTeX it appears to be fine.

Add info or delete as appropriate:

• Relevant for LuaTeX
• Issue tracker has been searched for similar issues? Yes

Minimal example demonstrating the issue

\documentclass{scrartcl}
\usepackage{unicode-math}
\begin{document}
	\[\overrightarrow{PQ}=\overrightarrow{Q}-\overrightarrow{P}\]
\end{document}

Result in LuaLatex:

Result in XeLatex:

[khaledhosny]

This is a LuaTeX issue related to how LuaTeX applies italic correction differently. LuaTeX calculates the accent size using the glyph bounds without adding the italic correction, while XeTeX adds it.