1.18 changes the bedrock at the bottom of the world such that it depends on the world seed. 1.18 also aims to have world generation match as closely as possible in Java Edition and Bedrock Edition. However, using the same seed on both editions and clearing out an area to expose the topmost level of bedrock shows a different pattern created by said bedrock, even though it'd be expected they'd be the same.
Linked issues
testing discovered 1
Attachments
Comments 3
Now reported under MCPE-149849
This report cannot be addressed until bedrock makes a decision about MCPE-149849
As it seems, the bedrock pattern is now just constant for all Bedrock Edition worlds regardless of seed, as it previously was on Java.