Windows 10, Bis 2015, Port Scan Detection (question)

I use BIS 2015 and Windows 10 and I noticed a strange thing - there is no notifications about port scans in Event. Previously, I used BIS 2016 and it shows me that port scan detected regularly. So I want to ask, why BIS 2015 doesn't show this notificatons? Is that a bug or BIS 2015 not quite compatible with Windows 10? :unsure: