Tested on ocp 4.3 with payload 4.3.0-0.nightly-2019-12-08-215349. Install "AMQ Certificate Manager" operator, then create instance for "Certificate" with "Edit Form", check the dropdown list in the form, there is placeholder "Select Key Algorithm". The bug is fixed, so move it to 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-2020:0062