Java Portal Event not received correctly by ABAP Webdynpro

We have a page that contains 2 iviews.
iView 1 contains the MSS Employee Search that raises portal event:
Namespace: "urn:com.sap.mss.employeesearch"
Name: "selection_changed"
The second iview contains an ABAP Webdynpro program that subscribes to the Portal event.
The issue is that the event in the ABAP webdynpro is not being triggered. It does get triggered if we first fire the event from the Java program, unsubscribe the event in the ABAP program them subscribe to the event in the ABAP program. The event gets triggered at this time and the parameter can be retrieved.
If the event is fired a second time, nothing happens in the ABAP program.
The abap program works fine when another abap program triggers the same portal event.
Also, the portal event is being picked up correctly by other SAP delivered JAVA programs. I just cannot get a custom ABAP Webdynpro program to work...
Any ideas, comments?
Glenn

Hi Glenn,
Are you using https? Is your j2ee stack and abap stack in the same domain? In the past I have found that https can cause issues in the event communication between different applications.
Cheers,
Dion

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