Also the proposed fix is incomplete. getConversationMap() would need to be synchronized as well.

Ah, good point, fixed that in the PR now.

Yes, if you give me an updated Weld JAR, I can try it.

Richard DiCroce easiest way to get the jar is to checkout that branch with PR and mvn clean install -DskipTests. That way, you'll get all the JARs generated.