After some updates i had the same problem.
Install varnish manually:
dnf install varnish -y
systemctl edit varnish
Uncomment, config right ports:
[Service]
ExecStart=
ExecStart=/usr/sbin/varnishd \
-a :82 \
-T localhost:6082 \
-f /etc/varnish/default.vcl \
-s malloc,1024m
systemctl daemon-reexec
systemctl restart varnish
systemctl status varnish
and it works but not visible config in panel.
Looks like they changed place of config but don't add handling that config in web panel.