There are in doubt transactions that should be rolled back after communication failure

We have two servers, one deployment on each.

TX impl: jta

there is remote outbound connection on the EAP 1 for EJB call from EAP1 to EAP2
outbound connection points to socket proxy which is managable (communication can be stopped) and forward communication to EAP2 (location that should be used in remote outbound connection without socket proxy)

Scenario:

call servlet on EAP 1 which trigger EJB on the EAP 1
EJB enlists dummy xa resource and writes to DB
EJB call EJB on the EAP 2 via remote outbound connection
EJB on the server 2 enlists dummy xa resource and writes to DB and return
at the exit of the prepare phase in dummy xa resource on EAP 2 communication (socket proxy) is killed
Transaction is supposed to be rolled back.

However, we can see that there are prepared resources on the EAP 2 that have not been rolled back

[INFO] Transaction

Xid:< formatId=131077, gtrid_length=29, bqual_length=37, tx_uid=0:ffff0a280499:6a6c4aa6:59885e66:12, node_name=0, branch_uid=0:ffff0a280499:6a6c4aa6:59885e66:27, subordinatenodename=1, eis_name=0 >

Type:StateManager/BasicAction/TwoPhaseCoordinator/AtomicAction/SubordinateAtomicAction/JCA

ParentNodeName:0

Participant:false

CreationTime:Mon, 07 Aug 2017 14:35:11 +0200

AgeInSeconds:128

Id:0:ffff0a280499:-166fadbf:59885e75:10

Participant

HeuristicValue:-1

Status:PREPARED

JndiName:java:/TestXAResource

GlobalTransactionId:[B@4e1b1193

HeuristicStatus:UNKNOWN

NodeName:null

Timeout:0

FormatId:-1

BranchQualifier:[B@39a95e4c

Type:/StateManager/AbstractRecord/XAResourceRecord

Participant:true

EisProductVersion:EAP Test

ClassName:com.arjuna.ats.internal.jta.resources.arjunacore.XAResourceRecord

EisProductName:Crash Recovery Test

Id:0:ffff0a280499:-166fadbf:59885e75:1a

Participant

HeuristicValue:-1

Status:PREPARED

JndiName:java:jboss/eap2-ds-jndi

GlobalTransactionId:[B@5c4ce097

HeuristicStatus:UNKNOWN

NodeName:null

Timeout:0

FormatId:-1

BranchQualifier:[B@6945cfc7

Type:/StateManager/AbstractRecord/XAResourceRecord

Participant:true

EisProductVersion:9.3.15

ClassName:com.arjuna.ats.internal.jta.resources.arjunacore.XAResourceRecord

EisProductName:PostgreSQL

Id:0:ffff0a280499:-166fadbf:59885e75:22

[INFO] ..........................................................................................

There is no evidence (eap1.server.log) that periodic recovery process is looking for in doubt transactions on the other server that could be rolled back.