The text in gnome-terminal appeared very wide. With gnome-tweaks, I discovered that the font for monospace was: none. Changing it to: monospace, make gnome-terminal much more normal. I wish monospace would be the default font for new users... rather than no font.
In dconf-editor, I see that the default of: Schema: org.gnome.desktop.interface monospace-default-name default to: 'Source Code Pro 10' But this font does not seems to be installed (does not appears in choice of gnome-tweaks).
Created attachment 240270 [details] default font (show wide chars in terminal)
Created attachment 240271 [details] with monospcace size 10 font
Apparently this is the default Gnome value: https://gitlab.gnome.org/GNOME/gsettings-desktop-schemas/-/issues/26 But what I see there, is the package that seems to control that (assigned): https://gitlab.gnome.org/GNOME/gsettings-desktop-schemas