The live-overlay had /home/antergos/.config/plasma-org.kde.plasma.desktop-appletsrc
which got copied as root before configure_user() creates the live user.
useradd -m skips chown if the home dir already exists, leaving .config/
owned by root — Plasma then can't write kcminitrc, xdg-desktop-portal-kderc, etc.
Wallpaper config is already in /etc/skel/.config/ so useradd -m copies it
with correct ownership.
c-ludenberg
f8c02fff3c