Verified on CFME-5.7.1.2 Tested manually - VM provisioned 4 VMs. There was no hosts removal. Also run CFME/RHV automation tests, and problem didn't occur.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHSA-2017-0320.html