nwbc4 http https sessions are still remains in ABAP backend after logout

Hi ,

We are using nwbc4 PL12  desktop software and it's  configured to back end Ehp6 through http & https.

Even though we close the session in nwbc desktop it remains exist in Backend system,Please see the below attachment.

If i use the same url used in NWBC desktop in IE browser directly it closes the session in the backend when i click on logoff.

Please let me know is there any settings do i need to do at NWBC/system level for this to work same as browser.

Regards

Janakiram