6.1.0.beta4 and identified a rule pattern inducing memory leaks

Ciao I'm using 6.1.0.beta4 and I identified in my application a rule pattern inducing memory leaks. I will attach rule, screenshots, and javacode to replicate the issue.

Steps to replicate identification of issue:

• IF the rule After No data received within the last 1 hour Error, now resumed is included, memory leaks happens, and pretty quickly.
• IF such rule is commented out, application do manage to keep alive.

Same problem happens even on 6.1.0.beta3 - I did not test with previous versions.

Thanks a lot in advance,
Ciao
Matteo