Hi, thank you for your update.
I have tried to switch backup modes without success...
Could you please let me know which details do you need?
ChromeFlex VM details:
bios: ovmf
boot: order=scsi0
cores: 1
cpu: x86-64-v2-AES
efidisk0: datastore1:401/vm-401-disk-0.qcow2,efitype=4m,size=528K
ide2...