KVM not start after update 6.8.4

[Slawka]

Windows won't start after update 6.8.4

Config before update

gent: 1
boot: order=ide1;virtio0;net0
cores: 4
cpu: x86-64-v2-AES
hotplug: disk
ide1: WD1.5:iso/LTSC_2019_Compact_x64_by_flibustier.iso,media=cdrom,size=2545928K
ide2: none,media=cdrom
machine: pc-i440fx-8.1
memory: 32768
meta: creation-qemu=8.0.2,ctime=1696792170
name: win10
net0: virtio=4E:AA:4F:90:5F:7A,bridge=vmbr0
numa: 0
ostype: win10
scsihw: virtio-scsi-single
smbios1: uuid=bf1f6022-3455-4f4a-a599-a00d69a799a6
sockets: 4
spice_enhancements: foldersharing=1,videostreaming=all
usb0: host=3-3,usb3=1
usb1: host=3-8,usb3=1
usb2: host=3-1,usb3=1
virtio0: eth0:104/vm-104-disk-0.qcow2,backup=0,iothread=1,size=300G
virtio1: WD1.5:104/vm-104-disk-0.raw,backup=0,iothread=1,size=200G
vmgenid: 89922c43-2ddc-48cb-b5f6-f0451a8270f9

When creating a machine after updating and adding old disks, it starts normally

agent: 1
boot: order=virtio0;ide2
cores: 4
cpu: x86-64-v2-AES
ide2: WD1.5:iso/LTSC_2019_Compact_x64_by_flibustier.iso,media=cdrom,size=2545928K
machine: pc-i440fx-8.1
memory: 32768
meta: creation-qemu=8.1.5,ctime=1714840056
name: win10
net0: virtio=BC:24:11:E6:00:C1,bridge=vmbr0,firewall=1
numa: 0
ostype: win10
scsihw: virtio-scsi-single
smbios1: uuid=c90e7db7-c48a-4640-896a-7524b28d3135
sockets: 4
virtio0: eth0:104/vm-104-disk-0.qcow2,backup=0,iothread=1,size=300G
vmgenid: d4b229bf-ae7d-4800-b75c-802fb1c329e1

what is the problem?