In 4.8 this problem was not occurring so why did we create this BZ?
That's correct, the issue exists in only 4.7 but the fix which is implemented for this is generic for all the releases. The original PR is actually for master branch, so in order to keep the releases in sync we decided to backport it to 4.8 also.
No issue on quay.io/rhceph-dev/ocs-registry:4.8.2-179.ci.
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 (Red Hat OpenShift Container Storage 4.8.2 bug fix update), 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-2021:3695