kvm runs in user.slice cgroup instead of qemu.slice, flooding syslog

Running a VM via the shell (to institute additional command line parameters) results in the syslog being flooded with qmeventd events like the following:

Running cat /proc/$(ps auxf | grep kvm | grep " <VMID> " | awk '{print $2}')/cgroup reveals:

0::/user.slice/user-0.slice/session-142.scope

However, when run the unmodified VM via the PVE GUI...

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