Mountains fail to generate on higher distances

How to reproduce the bug:
1) Create a new world in the latest Beta/Preview.
2) Teleport to coordinates beyond X/Z ±2,812,333
3) Locate a mountain biome

Observed results

• Generates a deep hole that reaches to Bedrock level with lava
• Aquifers may still generate.
• Villages and other structures generate too. Tested in a single biome world (using the "BiomeOverride" tag in world NBT)

Expected results

• Normal mountain