Here is a MWE using Libertinus Serif typeface which has the inputed glyphs but XeLaTeX and LuaLaTeX both reports: "Missing character: There is no ➌ in font Libertinus Serif":
\documentclass{minimal}
\usepackage{fontspec}
\setmainfont{Libertinus Serif}
\begin{document}
This char is missing: (^^^^278d)\par
This is also missing: (^^^^278c)\par
This char is not: (^^^^24ea)\par
\end{document}
My output is:
And my log file reports:
Missing character: There is no ➍ in font Libertinus Serif/OT:script=latn;language=DFLT;mapping=tex-text;!
Missing character: There is no ➌ in font Libertinus Serif/OT:script=latn;language=DFLT;mapping=tex-text;!
But, as you can see below those glyphs are present in Libertinus Serif typeface:
Any ideas what's going wrong?
otfinfo -g libertinussans-regular.otf | grep uni27
. Withgrep uni278
you'll get no output: no glyphs fromuni2780->uni278f