Hi Maciej,
I find two similar issues, both of them was for jBPM 3, and alejandro said they had been sovled.
https://jira.jboss.org/jira/browse/JBPM-1024
https://jira.jboss.org/jira/browse/JBPM-2692
Should we create a new issue for jBPM 4?
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