The system properties are not displayed completely when using a domain with multiple hosts. The starting point is a host.xml, in which a server group is defined. Within this server group a system property was defined accordingly. See the following code:

<server-group name="web-server-group" profile="full-ha">
    <system-properties>
        <property name="server.name" value="${jboss.host.name}"/>
    </system-properties>
</server-group>

The host.xml does not define a name of the server in the root element <host>, but within the server element. This name is the same for all hosts:

<server name="server" group="web-server-group">
    <socket-bindings port-offset="0"/>
</server>

If an attempt is made to view this server property via the GUI, only the value for one host is output, not for several (in this case with two hosts).

• Server 1: host-1
• Server 2: host-2

Related to: https://groups.google.com/g/wildfly/c/JwM0XrSfXBM
WildFly Version: WildFly Full 28.0.1.Final (WildFly Core 20.0.2.Final)