Icinga2.exe and nscp.exe opens multiple times in windows environment

Hi everybody,

i have a Problem with our Icinga2 Client Server System.
Every Client (Server 2012 R2 / Server 2016 and 2019) has the NSCP-0.5.2.39-x64.msi and Icinga2-v2.11.3-x86_64.msi installed.
After a few hours or days i can see that in the RAM there are many “old”?" services which don’t get closed.
Can somebody an an other environment also see the services in in RAM or is there an configuration failure of mine?
Programmversion r2.11.3-1