Question about HA cluster (VM autostart)

Hi all,

I'm fully testing my first proxmox HA configuration with 3 nodes, PVE version 3.0-23.
I have discovered the following about VM autostart: I have disabled the "automatic start" of a VM, activated the new cluster configuration, and then shutdown the VM; after few seconds, the VM started again!
Just for a test, I have than shut down all the 3 nodes, and at the restart, the VM finally stay down...

Thanks for any info/idea.
Regards
PieroB