Hello everyone, as I show in the image, no application installed by Snap shows its icon in the Xubuntu (XFCE) panel, my system information:
Snap version snap 2.56 snapd 2.56 series 16 ubuntu 22.04 kernel 5.15.0-39-generi
echo $XDG_DATA_DIRS /usr/share/xfce4:/usr/share/xubuntu:/usr/share/gnome:/usr/local/share:/usr/share:/var/lib/snapd/desktop:/usr/share
systemctl --user show-environment|grep 'XDG_DATA_DIRS=' XDG_DATA_DIRS=/usr/share/xfce4:/usr/share/xubuntu:/usr/share/gnome:/usr/local/share:/usr/share:/var/lib/snapd/desktop