Caros, segue o fix temporário para o ícone do liveinst no Desktop:
sed -i 's|cp /usr/share/applications/liveinst.desktop ${XDG_DESKTOP_DIR:-$HOME/Desktop}|cp /usr/share/applications/liveinst.desktop "${XDG_DESKTOP_DIR:-$HOME/Desktop}"|g' /etc/X11/xinit/xinitrc.d/zz-liveinst.sh