jgroups protocol order not retained

<stack name="tcp">
                <transport type="TCP" socket-binding="jgroups-tcp" diagnostics-socket-binding="jgroups-diagnostics"/>
                <protocol type="MPING" socket-binding="jgroups-mping"/>
                <protocol type="MERGE2"/>
                <protocol type="FD_SOCK" socket-binding="jgroups-tcp-fd"/>
                <protocol type="FD"/>
                <protocol type="VERIFY_SUSPECT"/>
                <protocol type="BARRIER"/>
                <protocol type="pbcast.NAKACK"/>
                <protocol type="UNICAST2"/>
                <protocol type="pbcast.STABLE"/>
                <protocol type="pbcast.GMS"/>
                <protocol type="UFC"/>
                <protocol type="MFC"/>
                <protocol type="FRAG2"/>
            </stack>

[standalone@localhost:9999 /] /subsystem=jgroups/stack=tcp:read-resource
[...]
"protocol" => {
            "FD_SOCK" => undefined,
            "FD" => undefined,
            "VERIFY_SUSPECT" => undefined,
            "BARRIER" => undefined,
            "FRAG2" => undefined,
            "MERGE2" => undefined,
            "pbcast.GMS" => undefined,
            "UNICAST2" => undefined,
            "UFC" => undefined,
            "MFC" => undefined,
            "pbcast.NAKACK" => undefined,
            "pbcast.STABLE" => undefined,
            "MPING" => undefined
        },