At my new job, our server use ESXi 6.5.0 and ESXi 6.0.0 as our Type 1 Hypervisor. While looking around in vSphere I found a VM at HW Version 12 installed on a host with ESXi 6.5.
As I found here, this version is only suppose to work on VMware personal desktop products Fusion/Workstation/Player.
I was wondering how can that VM work normally as it's not supposed to be supported by the host?