See linked issue.
Already fixed and available on latest JBoss/RH update sites.
Marek, this is not fixed yet - sorry. But I will have this resolved by end of today. I will let you know when the new build artifacts are ready.
Verified on BPMN2 Editor 0.2.7.201309201414 (JBTIS 4.1.3.Beta2)
Correction - Verified on BPMN2 Editor 0.2.7.201309191900 (JBTIS 4.1.3.Beta3)
This BZ has been part of the 6.0.0 stream.