Version 1.2.1+mc1.20.1 – Changelog

⚠️ Important Announcement

World height extension (Y = -128 ~ 1024) has been removed in this release for Minecraft 1.20.1.

• Why: This feature caused registry synchronisation issues between client and server in multiplayer, leading to corrupted biome data on screen and broken connections.
• What this means: This version fully restores the vanilla world height (Y = -64 ~ 320). It now works reliably in both singleplayer and multiplayer, even when the server does not have the mod installed.

🧪 Want to play with extended world height?

Please use the higher Minecraft version (1.21.x) of this mod.
The 1.21.x versions include the full world height extension (Y = -128 to 1024) and are fully compatible with multiplayer (server must also have the mod installed).

If you still wish to use the extended height on 1.20.1, you can keep using the older 1.2.0+mc1.20.1 release, but remember it is only recommended for singleplayer / beta testing.

📦 Other improvements

• Auto totem refill now works more reliably.
• Button text updates correctly when language changes.
• Stack size tweak mixin is now server‑side only, avoiding registry conflicts.

Thank you for your support. For the best experience with world height extension, upgrade to Minecraft 1.21.x and use the latest version of this mod.