Yes I am also facing the same issue after Nov security update.. Idle battery drain is high during night time. Bluetooth, wifi, mobile data, sync , NFC, edge all are off. If I leave my mobile at 50% battery at night and next day morning I can see 25% battery only left.
These all are happening only after Nov 2018 security patch update.
This is a common problem with samsung devices check LinusTechTips video on this, and as for the solution formatting the phone seems like the only way currently,your phone is eating battery while it is idle which is causing it to drain a lot faster,some other potential issue could be some new app you installed which is misbehaving