This issue has been fixed in 8.0.2 P03.
Workaround:
Grow a disk only when the VM is powered-off ("cold-grow"). Or, if a disk is already hot-grown, perform a VM operation that will cause the disk to be internally re-opened. This includes power-off and power-on, any snapshot operation, suspending and resuming, or hot-removing and hot-adding that specific disk.