Hi, please consider this sample code:

\documentclass{article}
\usepackage{fontspec}
\newfontface\MDI{Material Design Icons}[]
\begin{document}
Look at this character {\MDI \char"F1372}!
\end{document}

It is meant to work with the materialdesignicons-webfont.ttf font downloadable from https://materialdesignicons.com/ .

The code works just fine with xelatex, but with lualatex it picks a wrong char (there seems to be an offset by 14).

See also https://tex.stackexchange.com/questions/596610/how-to-use-luatex-with-large-unicode-codepoint .

Seems a bug to me, certainly an inconsistency with xelatex.

Any idea?