"Invalid single-table inheritance" error when trying to create a host after Red Hat Satellite 6.4 upgrade

Solution In Progress - Updated -

Issue

After upgrading to Red Hat Satellite 6.4, the following error appears when trying to create a host or put an existing host in Build state as a non-admin user:

"Invalid single-table inheritance type: Host::Discovered is not a subclass of Host::Managed"

Environment

Red Hat Satellite 6.4.0

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