[otrs] New ticket notification though ticket-state is closed

Hi, in 2.3 I created a telephone ticket, set a queue, set an agent, and set the state to a closed-state and no notification email was created. Now, with 2.4 I receive a notification email what is quite useless as the ticket is in a closed-state. I searched in the sysconfig for "closed" but couldn´t find anything useful. How do I get the old behaviour back? Lars PS: Why these changes in OTRS that break old behaviour and break settings??? There are several examples as can be seen from my mails =(