This is concerns the standalone deployment.
The definition of an explicit path to save subsystem files is ignored.

<subsystem xmlns="urn:jboss:domain:transactions:1.2">
<core-environment>
<process-id>
<uuid/>
</process-id>
</core-environment>
<recovery-environment socket-binding="txn-recovery-environment" status-socket-binding="txn-status-manager"/>
<coordinator-environment default-timeout="300"/>
<object-store path="/perf1/tx-action-store"/>
</subsystem>

Instead of the files being created as should be in "/perf1/tx-action-store" they are created instead in "<EAP_HOME>/standalone/data/perf1/tx-action-store".