The max items per EgressNetworkPolicy was always completely arbitrary; the code blindly assumes that there won't be more items there than there are possible `priority` values in an OpenFlow rule, but it doesn't really care beyond that. We picked 50 arbitrarily because it should have been more than enough given the way that we intended for people to use the feature, but people have always been using the feature to do things we didn't really originally intend. https://issues.redhat.com/browse/SDN-1199
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 (OpenShift Container Platform 4.6 GA Images), 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-2020:4196