Confirmed with payload: 4.3.0-0.nightly-2019-12-03-211441, the issue has fixed:
[root@dhcp-140-138 ~]# oc explain kubecontrollermanagers.spec
RESOURCE: spec <Object>
spec is the specification of the desired behavior of the Kubernetes
failedRevisionLimit is the number of failed static pod installer revisions
to keep on disk and in the api -1 = unlimited, 0 or unset = 5 (default)
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.