Hi Maciej,
1) I’d agree with you on the first statement, but we are talking about an instance of the LocalTaskService which is linked to a knowledge session. Session is not thread safe according to the documentation and therefore I wouldn’t allow two threads working with a single instance of the session.
2) I’ve converted all my workflow files from .rl format to .bpmn one and now everything is working fine. Have I missed an announcement that the .rl format is not supported anymore or it is a bug/regression?
Thanks,
Vladimir