Various issues in the deployment and startup of the KIE server can lead to EAP starting successfully and even the KIE server application deploying, but not providing the configured capabilities. This may explain the need for probes that query server capabilities: https://github.com/jboss-container-images/jboss-kie-modules/tree/master/os.kieserver.probes/added

Investigate why these probes are not the ones in use, and validate that they work properly