ESXi 6.7 - Frustrated and bewildered: All settings reset to default after reboot

[AveryFreeman]

Behavioral issues with ESXi 6.7 --

Discovered when trying to passthrough a cougar point SATA controller on my motherboard - it's a supermicro X9SCL-F, so it doesn't have ACS, but passthrough had been working since ESXi 5.5.

I toggle the SATA controller to passthrough, reboot.  Upon reboot, passthrough disabled.

I thought maybe it was the fault of the VMKernel.boot.disableACScheck = false flag, so I set it to true.  Reboot, flag set to false again.

I tried setting a VM to autostart.  Reboot, VM not set to autostart anymore.

Does anybody know what's going on?  Is this how it's supposed to behave?  Google appears to be turning up nothing.

[mars_cydonia]

Then I'm not the only one.

I have enable passthrough for 2 USB ports on my dell r710 and when I restarted all settings for esxi were reset on default and passthrough was disabled.

I had to re-register almost all my VM and re-created 1 vSwitch that I have created before reboot the host.