Logoff of SAPGUI not asking for closure confirmation

Hi Experts,

The SAPGUI during logoff is not asking for logoff confirmation while accessing backend systems through transactional iViews in NW Portal 7.3 with ECC 6.0.

Also even after entering into any Tcodes and closing the SAPGUI it is not asking for logoff confirmation.

The version of SAPGUI is 7200.3.12.3241.

Is there any configuration we should do inorder to ask for logoff confirmation when we use SAPGUI with Portal 7.3?

Regards,

Bharath K