Summary:

Lava sources are generated in icebergs and ice spikes.

Perhaps this is the reason for the changes:

• Water and Lava springs now correctly generate at the expected frequency

https://feedback.minecraft.net/hc/en-us/articles/4411290325901-Minecraft-Beta-1-18-0-21-Xbox-One-Windows-10-Android-

Seed example (icebergs):

Seed: 1999
Coordinates: 691 63 75

Seed example (ice spikes):

Seed: 1999
Coordinates: 11824 69 9007

Steps to reproduce:

1. Create a world with the specified seed.
2. Visit the specified coordinates.

Observed results:

Icebergs and ice spikes generate sources of lava.

Expected results:

Icebergs and ice spikes should not generate sources of lava.

Image: