By the way it's not red sand that is supposed to be generating there but orange terracotta.
Replying to Kinga Izdebska's comment:
I'm talking about worlds created before the 1.18 Caves and Cliffs update mostly then upgraded to the latest versions of Minecraft Bedrock 1.19 and above (including 1.20).
Issue still exists as of release 1.20.41 and beta/preview 1.20.60.21
(06/12/2023) EDIT: Still an issue as of release 1.20.50
Can confirm still an issue as of latest release 1.20.41 and beta/preview 1.20.60.21
(06/12/2023) EDIT: Still an issue as of release 1.20.50
(14/12/2023) EDIT: Still an issue as of betas/previews 1.20.60.22 and 1.20.60.23
I've already provided a download link for the sample world, I hope you can understand what I actually meant on this bug report.
But I can't send the world file because it exceeds the maximum file size limit...
Can confirm this is still an issue as of 1.20.30
(04/11/2023) EDIT: Still an issue as of 1.20.41
(16/11/2023) EDIT: Still an issue as of beta/preview 1.20.60.20
(30/11/2023) EDIT: Still an issue as of beta/preview 1.20.60.21
(06/12/2023) EDIT: Still an issue as of release 1.20.50
(07/12/2023) EDIT: Still an issue as of beta/preview 1.20.60.22
(14/12/2023) EDIT: Still an issue as of beta/preview 1.20.60.23
(05/01/2024) EDIT: Still an issue as of beta/preview 1.20.60.24
Can confirm still an issue as of release 1.20.70 and beta/preview 1.20.80.22