Hi Vinayak,
This is standard behavior when hitting the "Interact" button from the agent inbox result list. But if you hit the "Edit" button, then your BP should be confirmed but no interaction record will be created. So may you please confirm which button you're using? Because that might be a bug in the system (what is your CRM version?) or an unwanted side effect of some customer development.
Best regards,
Nicolas.
PS: more information about the differences between "Edit" and "Interact" buttons can be found here: Inbox Result List - Interaction Center WebClient - SAP Library