Wrong routing, wireguard / nm-config-editor
A VPN can be set as Split-Tunnel or Full-Tunnel. Full tunnel mean that the whole Internet traffic will be directed through the VPN-Tunnel. If I configure the connection for this mode, the routing is not set correctly.
$ ip r g 192.0.2.123 192.0.2.123 dev wg0 table 52085 src 10.1.1.2 uid 1000
Using a table is not necessary, ip route add 192.0.2.123 via <ip.main.if> dev <wl... or en...> is all what we need.