I'm also having this issue
I'll continue troubleshooting but a bit concerned by the lack of mention of it on this forums
My versions
libproxmox-backup-qemu0/stable,now 1.0.2-1 amd64 [installed]
pve-qemu-kvm/stable,now 5.1.0-7 amd64 [installed]
qemu-server/stable,now 6.3-2 amd64 [installed]...