The behavior of rule flow is different in drools 6.4.0 Final and 6.5.0 Final

I am using drools 6.5.0 Final. When I run sample code of section "starting a ruleflow from a rule" in documentation (https://nheron.gitbooks.io/droolsonboarding/content/gettingStarted/lesson_4__ruleflow.html), the output sequence is different from the screenshot.

But when I switched to drools version to 6.4.0 Final, the output sequence was extactly same with screenshot.