Zerto reports incorrect volume sizes for RDM disks

Zerto is reporting incorrect volume sizes for the RDM.

I am trying to setup a VPG for clustered VM with RDM running in VMware 7.0u3. There are multiple RDM volumes mapped to the VM, some of the volume sizes reported incorrectly by Zerto, and would not allow the mapping to the correctly sized replication target, which is also RDMs.