ENCRYPT fails to communicate after a network split and subsequent merge with asymmetric encryption. This works with symmetric encryption.
PR: https://github.com/infinispan/jdg/pull/520
Verified, that 6.4.1.ER1 uses jgroups-3.6.2.Final-redhat-2.jar - verification of jgroups-3.6.2.Final-redhat-2 was done in BZ #1196578