I have downloaded jgroups-5.0.0.Final.jar. I'm running SUSE SLES15 ServicePack4 and I'm using Oracle-Java jdk-17.0.6 

•    The application (using channel REF-CHAT) is started on computer 1
•    The application is waiting on chat messages to be entered and distributed via the ChatCluster

•    About 1 minute later the application (using channel JIF-CHAT) is started on computer2
•    The channel JIF-CHAT should join the ChatCluster and it is waiting on chat user messages to be entered 

•    Following log messages are produced 

-------------------------------------------------------------------
GMS: address=REF-CHAT, cluster=ChatCluster, physical address=192.168.100.4:8100
-------------------------------------------------------------------

-------------------------------------------------------------------
GMS: address=REF-FILE, cluster=FileCluster, physical address=192.168.100.4:8200
-------------------------------------------------------------------
Jul 17, 2023 9:57:29 AM org.jgroups.protocols.pbcast.ClientGmsImpl joinInternal
INFO: REF-CHAT: no members discovered after 2000 ms: creating cluster as coordinator
Jul 17, 2023 9:57:29 AM org.jgroups.protocols.pbcast.ClientGmsImpl joinInternal
WARNING: REF-FILE: JOIN(REF-FILE) sent to JIF-FILE timed out (after 2000 ms), on try 0
Jul 17, 2023 9:58:17 AM org.jgroups.util.SuppressLog log
WARNING: JGRP000011: REF-CHAT: dropped message batch from non-member JIF-CHAT (view=[REF-CHAT|0] (1) [REF-CHAT])

Currently it's very hard to reproduce the error

Please help me making Jgroups more reliable.