Comment 11 for bug 1771340

@tronde, I just tried and the fix worked for me.

With the proposed package:
root@xenial-ssh-reload:~# ps fxaw
  PID TTY STAT TIME COMMAND
    1 ? Ss 0:02 /sbin/init
   55 ? Ss 0:00 /lib/systemd/systemd-journald
...
 2443 ? Ss 0:00 /usr/sbin/sshd -D

Note the sshd pid: 2443

Reload fails after the config file is corrupted, as expected:
root@xenial-ssh-reload:~# echo "blah blah" >>/etc/ssh/sshd_config
root@xenial-ssh-reload:~# systemctl reload ssh
Job for ssh.service failed because the control process exited with error code. See "systemctl status ssh.service" and "journalctl -xe" for details.

But service is still running as before, same pid:
root@xenial-ssh-reload:~# ps fxaw
  PID TTY STAT TIME COMMAND
    1 ? Ss 0:02 /sbin/init
...
 2443 ? Ss 0:00 /usr/sbin/sshd -D

And status agrees:
root@xenial-ssh-reload:~# systemctl status ssh
● ssh.service - OpenBSD Secure Shell server
   Loaded: loaded (/lib/systemd/system/ssh.service; enabled; vendor preset: enabled)
   Active: active (running) (Result: exit-code) since Wed 2018-10-10 18:00:30 UTC; 1min 55s ago
  Process: 2491 ExecReload=/usr/sbin/sshd -t (code=exited, status=255)
  Process: 2442 ExecStartPre=/usr/sbin/sshd -t (code=exited, status=0/SUCCESS)
 Main PID: 2443 (sshd)
    Tasks: 1
   Memory: 1.5M
      CPU: 24ms
   CGroup: /system.slice/ssh.service
           └─2443 /usr/sbin/sshd -D

Oct 10 18:00:30 xenial-ssh-reload systemd[1]: Starting OpenBSD Secure Shell server...
Oct 10 18:00:30 xenial-ssh-reload sshd[2443]: Server listening on 0.0.0.0 port 22.
Oct 10 18:00:30 xenial-ssh-reload sshd[2443]: Server listening on :: port 22.
Oct 10 18:00:30 xenial-ssh-reload systemd[1]: Started OpenBSD Secure Shell server.
Oct 10 18:01:01 xenial-ssh-reload systemd[1]: Reloading OpenBSD Secure Shell server.
Oct 10 18:01:01 xenial-ssh-reload sshd[2491]: /etc/ssh/sshd_config: line 89: Bad configuration option: blah
Oct 10 18:01:01 xenial-ssh-reload sshd[2491]: /etc/ssh/sshd_config: terminating, 1 bad configuration options
Oct 10 18:01:01 xenial-ssh-reload systemd[1]: ssh.service: Control process exited, code=exited status=255
Oct 10 18:01:01 xenial-ssh-reload systemd[1]: Reload failed for OpenBSD Secure Shell server.

Note how it logged that there was a bad config option (as a result of calling sshd -t before the actual reload).

Could you please double check? For me, this update is fine.