When stopping the Domino service manually, the Windows service control manager (SCM) waits sufficient time to shutdown Domino cleanly.
But it turns out a Windows shutdown or reboot does not wait sufficient time for service termination.
This is critical because it would kill running Domino processes without notice. Even with transaction log enabled, this isn't a desirable situation.
This is a companion discussion topic for the original entry at https://blog.nashcom.de/nashcomblog.nsf/dx/domino-does-not-shutdown-cleanly-when-windows-is-rebooted-or-shutdown.htm