I checked this bug in 4.5.0-0.nightly-2020-06-04-025914 version,ifcfg-<ifname> files are present on the RHCOS filesystem and so the interfaces disabled, problem fixed. (I added attachment that prove it)
Created attachment 1695021 [details] ifcfg-<ifname> files are present
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://access.redhat.com/errata/RHBA-2020:2409