UTF-8 locale issue in GNOME

Hi,

On Alpine 3.17.3 (and I tried on edge too) using GNOME on wayland (installed using setup-desktop), my flatpak programs aren't using UTF-8.

I tried to add the following lines in /etc/profile.d/locale.sh

export LANG=fr_FR.UTF-8
export LANGUAGE=fr_FR.UTF-8
export LC_ALL=fr_FR.UTF-8

When I log in back, my locale is set to fr_FR only, and flatpak programs aren't working well, my French Downloads directory is written T%E9l%E9chargements instead of Téléchargements.

A workaround I found is to override the variable LC_ALL for all flatpak on my user: flatpak override --user --env="LC_ALL=fr_FR.UTF-8"

If I log in on XFCE (using lightdm, I can't use gdm to start XFCE for some reasons), the locale is fine and flatpak programs are in UTF-8.