The OpenSSH change is madness if it's not a bug. I hope it's not intentional.
What else is lurking that you and I aren’t aware of?
All of systemd... and network manager/modem manager/...
I grew up with static configuration files, init scripts, inetd, etc... then grew into Solaris smf, dtrace, zones ... and then Linux implemented systemd. I really miss smf and related tools but systemd is still just meh to me. The implementation feels like a somewhat half-in-each-world brainchild.