A known issue on ESXi 8.0 U2 likely causes data loss if a VM's disk is hot-extended (while running). This is due to VMware's CBT's QueryChangedDiskAreas, which will in turn cause certain data not to get backed up etc... essentially resulting in corruption.

More information available on VMware's KB: https://kb.vmware.com/s/article/95940

Please get in touch with the Hornetsecurity support team to start a fresh backup set if you hot-extended your disk on ESXI 8.0 U2.