Puppet Master Installation on FIPS enabled RHEL fails for PE 2018.1.7

Puppet Version: 5.5.10
Puppet Server Version: 2018.1.7
OS Name/Version: RHEL 7.6

Immediately after a successful installation/upgrade of Puppet 2018.1.7 on a FIPS enabled RHEL7.6 system, running puppet agent -t on the master node fails with the following error:

Error: Could not retrieve catalog from remote server: Error 500 on SERVER: Server Error: Evaluation Error: Error while evaluating a Resource Statement, Evaluation Error: Error while evaluating a Function Call, Unable to generate package repository configuration. Platform described by facts['platform_tag'] 'redhatfips-7-x86_64' is not a known master platform. (file: /opt/puppetlabs/puppet/modules/puppet_enterprise/manifests/repo/config.pp, line: 158, column: 9)

This issue isn't observed after a successful installation of Puppet 2019.0.1 in the same configuration.

Desired Behavior:

Puppet installation of the LTS branch should not have an issue installing on FIPS enabled systems.

Actual Behavior:

Using 'puppet facts show' on the system for two different configurations (2018 and 2019) shows the platform_tag fact to be identical in both configurations when FIPS mode is enabled for the system:

"platform_tag": "redhatfips-7-x86_64",

When the system is configured with 2018 puppet installed, the fipsmode issue arises while when installed with 2019, the issue does not occur.