Comment # 5 on bug 906201 from Lukas Ocilka

Roger, we need these Yast logs including debug logs, how this can be done is
described here:
https://en.opensuse.org/openSUSE:Report_a_YaST_bug#The_y2logs_don.27t_seem_to_show_my_problem._Can_that_logging_be_made_any_more_verbose.3F

shorter version:
On a commandline (xterm, konsole, etc.)
su -
Y2DEBUG=1
yast2 services-manager

Anyway, Yast uses systemctl to get list of services and their details:

systemctl show ${service_name}
systemctl status ${service_name}

If systemctl already shows wrong info, then systemctl or the service
itself is to blame, not Yast.