Problem with WCF-Custom adapter (WS HTTP Binding with reliable messaaging) - Error event logged, even though transaction completed Sucessfully

When BizTalk Server sends request to WCF Service, The system is able to service the request and complete the transaction successfully.  But after the successful completion of the transaction, the following two events are logged in the BizTalk server. The orchestration, which initiates the service request also getting completed successfully.

Log Name:      Application
Source:        BizTalk Server
Date:          18/11/2013 10:43:11 p.m.
Event ID:      5796
Task Category: BizTalk Server
Level:         Error
Keywords:      Classic
User:          N/A
Computer:     
Description:
The transport proxy method MoveToNextTransport() failed for adapter WCF-Custom: Reason: "Messaging engine has no record of delivering the message to the adapter. This could happen if MoveToNextTransport() is called multiple times for the same message by the adapter or if it is called for a message which was never delivered to the adapter by the messaging engine". Contact the adapter vendor.

Log Name:      Application
Source:        BizTalk Server
Date:          18/11/2013 10:43:11 p.m.
Event ID:      5677
Task Category: BizTalk Server
Level:         Error
Keywords:      Classic
User:          N/A
Computer:     
Description:
The Messaging Engine encountered an error while suspending one or more messages.

The details of the service is given below

Service

-          WS-HTTP Binding

-          Reliable messaging enabled

-          Security :

o   Mode : Message

o   ClientCredentialType : Windows

Client

-          BizTalk WCF Custom adapter  with WS-http binding (BizTalk Server 2010)

-          Static two way port

-          Reliable messaging enabled

-          Security :

o   Mode : Message

o   ClientCredentialType : Windows

Every thing works fine as expected for the interface. ie the transaction is success. After a min of the transaction completion. I am getting the errors.
01. I have not checked Propagate Fault message (as a solution provided in another blog)
02. Its a static Port
03. I am using reliable messaging
The below error events are logged in the event viewer

Looks like the issue is BizTalk is not able to handle the reliable message properly. Its failing when it tries to close the connection after successful transaction.

I am working with Microsoft to get this sort it out currently, I will update once I have more details on this issue.