World generation sometimes stops at chunk borders

Error 1: ocean ravine

Seed: -3070852984194394850, coords -200/60/160
I came across a deep_ocean ravine which entered a beach biome. When the ravine hit a chunk boundary, it stopped generating completely.

Error 2: lake and cave

Seed: -3070852984194394850, coords: -12026/70/5620
I found a cave generating into a lake which leaves a blank wall at the chunk border.

Error 3: shattered savanna floating island

Seed: -3070852984194394850, coords: -11900/80/5270
A quarter of a shattered savanna cliff has generated here.