Minecraft Java Edition Snapshot 21w39a: New Advancements, UI Changes, and More

Minecraft: Snapshot 21w39a
Minecraft: Snapshot 21w39a Mojang Studios

Minecraft: Java Edition Snapshot 21w39a is out, and it brought a few changes. This is an experimental update, so players will have to wait for them to be applied to the main build. The developers have tweaked mountain peaks to make them look proper, rather than looking like a flat hilly mountain. This won’t change the way players travel across the mountain, but it looks better now.

The developers have also made some changes to the effects UI. The lists of effects are shown on the right side instead of the left. This change is to reduce the amount of clutter in the UI. The list of effects has two visual modes: classic and compact. The classic mode is the default list wherein effects are displayed one after another. The compact version displays the icons of effects, specifically designed for smaller screens.

Minecraft: Java Edition Snapshot 21w39a

Advancements
  • Added “Caves & Cliffs” for falling from top to bottom of the Overworld
  • Added “Feels like home” for riding strider on lava for 50 blocks in the Overworld
  • Added “Star Trader” for trading with a villager at the build height limit
  • Added “Sound of Music” for playing music with a jukebox in a Meadow biome
Changes in 21w39a
  • The lone trees in Meadows now always contain a bee nest
  • Drowned can spawn in aquifers inside dripstone caves
  • Zombies don’t spawn in dripstone caves
  • Buried treasure chests can now contain water breathing potions
  • Changed default brightness to 50
  • Redesigned how effects look in the inventory screen, to allow them to show even with the recipe book open
Technical changes in 21w39a
  • Added fall_from_height and ride_entity_distance advancement triggers
  • Changed nether_travel to match other similar triggers
  • Added new loot table function set_potion
  • Changes to the on-disk chunk format
  • Resource pack format has been increased to 8
  • Standalone server.jar now bundles contains individual libraries instead of being flat archive
Fixed bugs in 21w39a
  • Status effects aren’t displayed in inventory when recipe book is open
  • Bottom border on status effect displays in the inventory is missing
  • Status effect bars shift the player’s inventory in creative mode
  • Potion effects obtained in creative mode while in inventory do not show up until reopening inventory
  • Bamboo generates in caves under jungles
  • Sugar cane generated in cave
  • Chatting causes lag to occur
  • Naturally generated cave vines have an age between 17-25
  • Certain Biome Builder debug values do not change

You can read more about the update here.

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