I suggest that everyone write about the identified bugs in this topic!
1) on updates 20180105, 20171227, 20171219 the flashlight on the locked screen does not work and on the button-home

1: Widgets don't update anymore
2: The battery gets drained around 30% faster

I update from BV8000Pro-Blackview-V0_20170803_20171227 to BV8000Pro-Blackview-V0_20170803_20180105