Tenant usage report

Where does the amount of hosts come from in tenant usage reports? In some cases, the number seems to be way higher than the amount of hosts in Infrastructure → Compute.

Currently:

For the host count:
Counts all compute_server records where the compute_server account_id matches the tenant ID scoped in the report.

For the instances count:
Counts all instance records where instance account_id matches the tenant ID scoped in the report.