Checked on ocp 4.7 cluster with payload 4.7.0-0.nightly-2021-03-25-190433, since the All Instances tab is not rendered when only one API is provided in ocp 4.7, so I just do a regression test about operator instalation and check tabs on the operator page(including "All instances" tab for operator with multiple apis), no regression issue is found.
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 (Moderate: OpenShift Container Platform 4.7.5 security and 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/RHSA-2021:1005