Bedrock Edition 1.17.40/Development versions
This is a list of Bedrock Edition 1.17.40 development versions.
beta 1.17.40.20
Beta 1.17.40.20 is the first beta version for Bedrock Edition 1.17.40, released on September 15, 2021,[1][2] which brought changes to the new world generation from Java Edition 1.18 experimental snapshots, and fixes bugs.
Additions
Blocks
Client request placeholder block
- Visually transparent and has an unknown use.
- Can be obtained in item form via the use of external software such as inventory editors.
- Would eventually become reinforced deepslate.
Changes
General
- Used only by selected Android devices that run on ARMv7
Technical
Data Driven Items
- Updated documentation for Block Rotation Component.
- Added required toggles to documentation and to content error for block components.
Data Driven Blocks
- Updated documentation for BlockExplosionResistance.
Graphics
- Added a content error for using a material but not providing the required number of textures to the render controller.
- Testing RenderDragon engine across subset of Android devices (ARMv7).
Molang
- Add new compile errors for expressions like 'text' + 3, which were previously ignored (This is a Versioned Change as of engine version 1.17.40).
User Interface
- Added an ImGUI window for easier viewing of content errors.
Experimental
These additions and changes are accessible by enabling the "Caves & Cliffs" and "Enable GameTest Framework" experimental toggle.
Mobs
- Can now spawn in meadow biome.
- Can now spawn in grove biome.
- Now only spawn in snowy slopes, stony peaks, lofty peaks, and snow capped peaks biomes.
- Can now spawn in meadow and snowy slopes biome.
World generation
- Re-added ice spikes, eroded badlands, jungle edge, and savanna plateau.
- The cavern now generates in 2 layers of different stone bases depending on the depth.
- Meadows sometimes spawn a lone oak or birch, often with a bee nest.
- Infested stone now generate in the new mountain biomes.

Ore distribution
- Tweaked ore distribution to match in parity with Java Edition.
- Now generate in all the new mountain biomes.
- A new mountains biome that is a variant of lofty/snowcapped peaks that uses stone and strips of gravel, instead of snow and ice.
- Is used to avoid temperature clashes.
- Now generate in meadows.
General
- Tweaked biome placement, river size, and terrain shapes for a better overworld experience.
General
- Raised cloud level from 128 to 192.
Technical
GameTest Framework
- Renamed method succeedWhenBlockTypePresent to succeedWhenBlockPresent
- Fixed a bug where property idwould return "Unknown" for custom entities (MCPE-137786)
- Identifier strings returned from property idnow include the item's namespace
- GameTestSequence
- Removed method thenWaitWithDelay
- Added method thenWaitAfter(delayTicks: number, callback: () => undefined) - After a delay, executes the given callback every tick until it succeeds. Exceptions thrown within the callback will end sequence execution
- Player
- Fixed a bug where the location property would return an incorrect height for players
- Added property id
- Block
- Replaced method getLocationwith property location
- Replaced method getPermutationwith property permutation
- Replaced method getTypewith property type
- Replaced methods isWaterloggedand setWaterlogged with property isWaterlogged
- Replaced method getBlockDatawith property permutation
- Replaced method isEmptywith property isEmpty
- Removed property canBeWaterlogged
- BlockType
- Replaced method getNamewith property id
- Replaced method canBeWaterloggedwith property canBeWaterlogged
- BlockPermutation
- Replaced method getTypewith property type
Known issues
- Beehives generates too frequently in this version.
Fixes
Experimental
- Maps now correctly show the colors of blocks below a Y level of zero (MCPE-136638)
- Vines now generate in Lush Caves instead of generating above the surface (MCPE-125800)
- Vines can now grow down below zero height
- Villages now generate in the style of the biome they are located in (MCPE-136939)
Blocks
- Falling stalactites are now offset properly to avoid interacting with entities outside their intended hitbox (MCPE-132772).
- Beehives now generate in the world facing south.
Candle Cake Blocks
- Pressing the 'use' button on a Candle Cake now consumes the correct amount of cake slices (MCPE-135519).
Character Creator
- Fixed a crash that could occur when using Character Creator.
- Tweaked color tint for default Steve skin to match default Steve (MCPE-120818).
- Altered message for when friends change skins (MCPE-92772).
Commands
- Education Edition items are no longer shown as an option when using @e[type=] (MCPE-78363).
Gameplay
- Fixed a bug that caused players to be set on fire upon changing dimensions if there was Lava underneath the Nether Portal (MCPE-28765).
- Players can no longer eat food at full hunger in Survival mode (MCPE-60807).
- Sea Grass no longer spawns under Lily Pads during world generation to avoid breaking them.
- Villagers can no longer spam doors open and closed (MCPE-28055).
- Cartographers now more consistently give new maps on all platforms.
World Generation
- Amethyst geodes are now much less likely to generate in Strongholds, and if they do they will not destroy End Portals (MCPE-129861, MCPE-128799).
Graphical
- Improved world visibility culling for underground situations to eliminate seeing sky at the end of tunnels/stairs (MCPE-128372).
Mobs
- Improved mob pathing around partial blocks (MCPE-127381).
- Armor no longer renders on Pillagers and Vindicators, but are still granted armor effects (MCPE-74242).
- Fixed an issue with mob rendering that caused Vindicator Axes to be visible even when they're not attacking on older Resource Packs (MCPE-123229).
- More mobs will spawn underground in the Overworld.
Powder Snow
- Powder Snow no longer disappears when looking at it from a distance (MCPE-127565).
Structure Block
- Trapdoors now rotate correctly when loaded from a Structure block (MCPE-66933).
User Interface
- Fixed an issue where the d-pad and directional keys could not be used to navigate in certain parts of the UI (MCPE-132826).
- Fixed an issue where an error message could be shown after suspending the game on the achievements screens with screen animations disabled (MCPE-132269).
- Fixed an issue where an obscure gamerule was added to settings (MCPE-139025).
- Fix keyboard/d-pad navigation from custom server to edit server button.
- New achievements screens are available on Windows 10 ARM-based PCs.
- The sign in text on the start screen will no longer overlap the Marketplace button.
- Add space between tab title and the word 'Tab' for text-to-speech on Settings screen.
- Added "More Info" button to failed sign-in modal.
Technical
- Command blocks with 'Needs Redstone' and a non-zero 'Delay in Ticks' will now execute only if they remain powered for the delay duration (MCPE-74281).
- Fix alignment of the sidebar display from the
/scoreboardcommand when text length changes. - Fixed failure to render leash when attached to a mob outside of viewport (MCPE-63931).
- Fixed ability to summon experience orbs via
/summoncommand (MCPE-130835). - Fixed display only entity destruction in chunk discard scenarios.
- Fixed query.item_remaining_use_duration having improperly scaled or inverted results (This fix is a Versioned Change as of engine version 1.17.30).
beta 1.17.40.21
Beta 1.17.40.21 is the second beta version for Bedrock Edition 1.17.40, released on September 22, 2021,[3][4] which allows old worlds to upgrade to the new world generation behind experimental toggle, and fixes bugs.
Changes
General
- As part of continued testing, removed RenderDragon engine support on Android devices (ARMv7) (MCPE-141319)
Experimental
These additions and changes are accessible by enabling the "Caves & Cliffs" and "Enable GameTest Framework" experimental toggle.
World generation
- In world generation, grass is replaced with stone (if generated near grass).
- Mountain tops are now more jagged and pointy.
- Mountain areas and peak biomes now are slightly larger on average.
- Sometimes generate layers (strips) of gravel.
- Sometimes generate layers (strips) of calcite.
General
- Added new world/cave generation when upgrading saved chunks below Y=0 using the Caves and Cliffs experimental toggle.
- Chunks previously upgraded with Bedrock underneath will not see this change.
- Upgrades older flat worlds to the new extended heights available with the Caves & Cliffs experimental toggle
- New flat worlds using the Caves & Cliffs experimental toggle will generate starting at "y=-64"
Technical
GameTest Framework
- Updated the GameTest Framework interface and added a new SimulatedPlayer capability:
- Added 'SimulatedPlayer'class to GameTest. This class enables GameTest to simulate a variety of player behaviors such as movement, using items, and interacting with blocks and entities. See the GameTest API reference documentation for more details.
- Added function spawnSimulatedPlayer(blockLocation: BlockLocation, name: string): SimulatedPlayer
- Added function removeSimulatedPlayer(simulatedPlayer: SimulatedPlayer): void
- mojang-gametest.Test type
- Changed signature of function assertEntityInstancePresent(entity: Entity, blockLocation: BlockLocation, isPresent: boolean = true)
- mojang-minecraft components
- Component inventory now works with Player inventories
- Added 'SimulatedPlayer'class to GameTest. This class enables GameTest to simulate a variety of player behaviors such as movement, using items, and interacting with blocks and entities. See the GameTest API reference documentation for more details.
Fixes
Experimental
- Fixed an issue in beta builds where flying above the world limit (255 for non-Caves & Cliffs experimental, 319 for Caves & Cliffs experimental) would be prohibited (MCPE-141360).
- Copper Ore now generates up to y=96 instead of y=64 (MCPE-125233).
General
- Holding Top Snow in hand while hovering over Grass Blocks no longer causes incorrect behavior (MCPE-140659, MCPE-140660).
- Bee Nests now generate correctly in the world (MCPE-141324, MCPE-132195).
- Non-fireproof mobs now avoid pathing through fire (MCPE-23835).
Gameplay
- Vanilla Parity: Players are now able to activate Elytra gliding while moving upward (MCPE-59580).
- Using Dye on Signs that contain formatted color text will overwrite the formatted color text.
World Generation
- Fossils are now much less likely to generate in, and destroy structures.
- Dungeons are no longer misplaced or missing outside of the Caves & Cliffs experimental toggle (MCPE-121708).
Mobs
- Iron Golem now spawns only on solid blocks (MCPE-140145).
- Wielded weapons now render properly on Pillagers and Vindicators (MCPE-141321).
User Interface
- Riding an animal now displays the correct button prompt when playing with non-touch controls.
Character Creator
- Back appearance pieces will no longer cover the left and right arrows in the profile screen.
- Fixed featured items in the profile screen not opening the featured catalog in the Dressing Room.
- Fixed default clothes changing color if another item’s color was edited previously.
- Sidebar options can now be selected in expanded view after navigating back from previously selected sidebar option while using controller.
- Sidebar no longer opens upon expanding any of the classic skin packs in the Dressing Room.
- Improved the navigation flow for Character Creator so that it always switches to the selected Character Creator profile (MCPE-139022).
- Skins that are equipped from Marketplace while in-game now apply to character.
Technical
- Fixed a bug that caused animations to be restarted when changing render controllers.
- Fixed text on Signs losing their formatting when new lines or word-wrapping are encountered. Formatting will now persist until the reset code or an overriding code is found. This is not retroactive and previously created Signs will not be changed.
- Molang expressions that contain capital letters are properly evaluated now.
- 'query.get_equipped_item_name' will now recognize Sea Lantern (MCPE-67893).
- Add new compile errors for expressions like 1 + (9 10), which were previously ignored (This is a Versioned Change as of engine version 1.17.40).
beta 1.17.40.23
Beta 1.17.40.23 is the third and final beta version for Bedrock Edition 1.17.40, released on September 30, 2021,[5] which fixes bugs.
Fixes
Experimental
- Fixed shifted sub-chunks on Caves & Cliffs flat worlds (MCPE-140428).
- Flat worlds with the Caves & Cliffs experimental toggle enabled will properly upgrade to use the new dimension heights.
Gameplay
- Fixed an issue where Light Blocks would force players to spawn at the surface of the Overworld.
- Tropical Fish no longer lose their colors upon grabbing them with a Water Bucket and then releasing them (MCPE-137158).
- Trapdoors show up in the Recipe Book again (MCPE-141441).
- Lily Pads can once again be placed on water deeper than one block (MCPE-141403).
Mobs
- Mobs no longer jump continuously on non-full blocks such as Snow layers (MCPE-141411).
Notes and references
- ↑ "Minecraft Beta - 1.17.40.20 (Xbox One/Windows 10/Android)" – feedback.minecraft.net, September 15, 2021.
- ↑ "Minecraft Beta 1.17.40.20" by Jay Wells – Minecraft.net, September 15, 2021.
- ↑ "Minecraft Beta - 1.17.40.21 (Xbox One/Windows 10/Android)" – feedback.minecraft.net, September 22, 2021.
- ↑ "Minecraft Beta 1.17.40.21" by Jay Wells – Minecraft.net, September 22, 2021.
- ↑ "Minecraft Beta - 1.17.40.23 (Xbox One/Windows 10/Android)" – feedback.minecraft.net, September 30, 2021.