Using two clustered datagrid nodes of version 8.4.5 and a cluster or two nodes of EAP 7.4.14 the following error is observed when accessing /clusterbench/session more than  twice ....  The serial does not increase above one ...

ERROR o.j.e.c.j.ClusteringHTTPRequestSampler: Invalid serial: Expected 2, received 1 (previous: JSessionId{sessionId='N377uJOfKmn49LJR79T0m53-eFbt8W5W0R2Y77_', jvmRoutes=[wildfly2]} current: JSessionId{sessionId='N377uJOfKmn49LJR79T0m53-eFbt8W5W0R2Y77_', jvmRoutes=[wildfly2]}) 
samples sequence:
12:41:42.019 serial 0 JSessionId{sessionId='N377uJOfKmn49LJR79T0m53--eFbt8W5W0R2Y77_', jvmRoutes=[wildfly2]}
12:41:46.138 serial 1 JSessionId{sessionId='N377uJOfKmn49LJR79T0m53--eFbt8W5W0R2Y77_', jvmRoutes=[wildfly2]}