This happens on two different computers, both running the same OS (Arch Linux;
GNOME 46 on Wayland) and Emacs version (GNU Emacs 29.3 (build 1,
x86_64-pc-linux-gnu, GTK+ Version 3.24.41, cairo version 1.18.0)).

The fact that the symbols are displayed in the completion list suggests to me
that Emacs seems to have a way to find glyphs for them. If that is correct, then
why doesn't it find them when the characters are in a "normal" buffer?

Or is there something else that makes those characters appear, outside of Emacs'
control? The fact that taking a screen shot has such an effect seems to indicate
this...

And I'm also wondering what I can do to make Emacs find a glyph for these
characters. Other applications, including GNOME Terminal, gedit and LibreOffice
have to trouble displaying them.

Any and all hints are appreciated.

Joost



-- 
Joost Kremers
Life has its moments