The https://support.broadcom.com/external/content/release-announcements/CA-Output-Management-Web-Viewer-Supportability-Matrix/5659 has now been updated to show that running 12.1 Web Viewer on RHEL 8 and 9 is supported.
Hello Web Viewer & View Communities! I am happy to announce that we released a new Web Viewer r14 enhancement, PTF LU03672 , that introduces the ability to use indexing and cross report indexing for PDF reports. See the video announcement here ...