I don’t have much knowledge about SHS and proxmox, but I do have a few troubleshoot questions that perhaps could help you or others to solve the problem..
You said that automatic reboot is not working, does manual reboot from the UI work (so not the reboot option of the vm it self)?
I assume there is a log file in proxmox that shows what happens when you start/reboot/shutdown the VM. Does this give any error messages ?
Earlier this post was created with a reboot issue with the same software version Homey SHS reboot problem. Not sure if it is the same problem or if it has the same cause, but could be a bug in this version or this update changes a setting that you won’t expect.
