This was fixed by the etcd 3.4 rebase that happened before feature freeze but needs to be tested.
https://github.com/openshift/etcd/pull/44 merged prior to branching 4.5
Execute regression test have not hit issues.
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-2020:2909