Villages generate at weird heights

In 18w06a, village structures now spawn at some fairly odd (and different) heights

(Night Vision added to be able to see better in spectator)

Picture 1 is the birds eye view of the village
It doesn't have a well, and it has several holes that go all the way down to around bedrock

Picture 2 is the well. It has generated right above y = 0, and is filled with stone

Picture 3 is a farm that has spawned beneath a lava pool

Picture 4 is one of the giant holes that goes from the surface to bedrock. Below it, is a village house as shown in Picture 5.

This most likely relates to MC-125003, but it is distinctly different

Steps to reproduce
1. Create a new world in 18w06a, with seed 8607743678947408306.
2. Go to the coordinates 165, 72, 52.
3. You are at where the village well should be.