When the hills and floating Islands were generated, the village was destroyed

The bug

Although there are many instances of villages spawning over ravines, holes, ponds, etc ... this is the first where the village seems to spawn under the village.   

I'm wondering if it found an odd hill generation and this is the result of interacting with it.

Seed: -7437039540087077162
X: 1706 Y: 71 Z: 167

How to reproduce

1. Render Distance = 2 chunks
2. Use the following command: Make the terrain load earlier than the building.

   /tp 1706 71 167
   

3. Use the creative mode to fly to the X: 1706 Y: 71 Z: 167.