Verified with OCP build 4.4.0-0.nightly-2020-05-25-115719,

- On 4.4 OCP without fix ENV, get the related errors
...
2020-05-06T15:10:17.009079506+00:00 stderr F Usage:
2020-05-06T15:10:17.009079506+00:00 stderr F   kube-apiserver [flags]
2020-05-06T15:10:17.009079506+00:00 stderr F
2020-05-06T15:10:17.009079506+00:00 stderr F Generic flags:
2020-05-06T15:10:17.009079506+00:00 stderr F
...

- In one terminal, enter into master 
$ master=$(oc get nodes | grep master | head -1 | cut -d " " -f1)
$ oc debug node/$master
sh-4.2# chroot /host
Try incorrect parameter to endpoint,
sh-4.4#  curl -k --silent --show-error https://localhost:6443/readyz1

$ cd /var/log/pods

$ grep -nr -i 'usage' openshift-*

No results found.

So the bug was fixed, move the bug verified.

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-2020:2310

*** Bug 1838195 has been marked as a duplicate of this bug. ***