Gracefully/soft shutdown of Windows server 2012 R2

I use a Windows Hyper-V cluster mit Windows Server 2012 R2.

If I have the Windows Server not in clustered mode, then the Graceful Shutdown (soft shutdown) works well.

If I have the Windows Server in clustered mode, then the Graceful Shutdown does not work.

The Graceful Shutdown is working in clustered mode only during the first 2 hours after the last OS shutdown or reboot.This could be an authentication timeout.  

The local security policy „Shutdown: Allow system to be shut down without having to log on” has no influence on this behavior.

With VMWare ESXi6.7 Graceful Shutdown is OK.

To trigger the graceful shutdown I use CISCO UCSM or an IPMI Tool which send the soft shutdown signal via CISCO CIMC and ACPI to the Windows OS.

How can I trace (examine) the ACPI soft shutdown signal on the Windows Server side?