I'll not create any JIRAs for problems that come and go with the presence and absence of dialect "mvel".
After one of those, Mark has urged me to create another JIRA for MVEL, and this I just won't do. For me, as a Drools user, this project Drools has adopted MVEL as a vehicle for primary expression and statement evaluation; since 5.2.0 it seems that I don't have a choice for some parts of the Drools language. For me, this means that the full responsibility now rests with the Drools team - I cannot simply work around by sticking with 'dialect "java"'.
Sorry if this sounds harsh and egocentric, but what I've heard about MVEL maintainer's non-eagerness for fixing bugs hasn't inspired me to do otherwise. (Since this is hearsay, I should add the politically correct statement: "innocent until proven otherwise".)
Regards
Wolfgang