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{{dangerous version|edition=Java|type=softlock|Dying in a nether portal causes softlock issues.<ref>{{bug|MC-225253}}</ref>}}{{Infobox version
|title=Minecraft 21w19a
|image=21w19a.jpg
|image2=Java Edition 21w19a.png
|edition=Java
|type=Snapshot
|date=May 12, 2021
|jsonhash=a57e1436e057febaadedca85f24aae7bf9418079
|clienthash=ec029994171ba8e3d9a68458d7d307a67a84faac
|clientmap=7de88c6a5342a640d905ea008a1ad364bdcd63a5
|serverhash=d0a9151432af384f5f2ca72e8e43422772158d0e
|servermap=8d8524fd057a410dbc680f8f46b967b39ad3f1d8
|otherdl={{dl|a6b56d6f14869646eb8d399e99a0149bdd954490|custom|name=CavesAndCliffsPreview.zip|title=Data pack}}<ref group=note>Re-enables features set to release for [[Minecraft:Java Edition 1.18|1.18]].</ref>
|parent=1.17
|prevparent=1.16.5
|prev=21w18a
|next=21w20a
|nextparent=1.17.1
}}<onlyinclude>

'''21w19a''' is the twenty-first [[Minecraft:snapshot]] for [[Minecraft:Java Edition 1.17]], released on May 12, 2021,<ref>{{snap|21w19a|May 12, 2021}}</ref> which increases the minimum Java version to 16, removes unfinished features ([[Minecraft:bundle]]s, [[Minecraft:candle]]s and [[Minecraft:sculk sensor]]s), and fixes bugs.

== Additions ==
=== General ===
'''[[Minecraft:Tag]]s'''
* Added <code>mineable/axe</code>, <code>mineable/hoe</code>, <code>mineable/pickaxe</code>, and <code>mineable/shovel</code> block tags.
** Blocks with these tags can be destroyed more quickly with the matching tool.
* Added <code>needs_stone_tool</code>, <code>needs_iron_tool</code>, and <code>needs_diamond_tool</code> block tags.
** If a block requires the correct tool to drop, these tags determine which tier of that tool is required.

== Changes ==
=== Blocks ===
'''[[Minecraft:Anvil]]s'''
* The maximum length a name of an item can have after being renamed has been increased from 35 characters to 50 characters.

'''[[Minecraft:Candle cake]]s'''
* Renamed from "[Color] Candle Cake" to "Cake with [Color] Candle".

=== Mobs ===
'''[[Minecraft:Bee]]'''
* Can now pollinate [[Minecraft:cave vines]].

'''[[Minecraft:Squid]] and [[Minecraft:glow squid]]'''
* [[Minecraft:Lead]]s now work with them again.

=== Items ===
'''[[Minecraft:Hanging roots]]'''
* Changed the way the item model is displayed in the player's right hand.
* Are now twice as big when dropped as an item entity.

=== Command format ===
'''{{cmd|item}}'''
* New syntax:
** {{cmd|item replace <target> with <item stack> [<count>]}}
*** Same as old version of the command.
** {{cmd|item replace <target> from <nowiki><source></nowiki> [<modifier>]}}
*** Copies item for source to target(s), optionally applying modifier.
** {{cmd|item modify <target> <modifier>}}
*** Modifies item (without copying).

=== Gameplay ===
'''[[Minecraft:Creative inventory]]'''
* Removed [[Minecraft:sculk sensor]]s, [[Minecraft:bundle]]s, and [[Minecraft:candle]]s.
** These items can still be accessed through commands.

'''[[Minecraft:Recipe]]s'''
* Removed recipes for [[Minecraft:bundle]]s and [[Minecraft:candle]]s.
* Grouped the recipes for crafting copper ingots from a block of copper with other recipes for copper ingots.

=== General ===
'''[[Minecraft:Splash]]es'''
* Changed the splash "Now Java 8!" to "Now Java 16!"

'''[[Minecraft:Tag]]s'''
* Added cave vines to the <code>bee_growables</code> block tag.
* Removed moss blocks from the <code>lush_ground_replaceable</code> block tag.
* Added azaleas and flowering azaleas to the <code>saplings</code> block and item tags.

'''Technical'''
* Java requirement changed from version 8 to version 16.

=== Experimental ===
Changes have been made to the official Caves & Cliffs world generation preview data pack, which gives early access to the world generation coming in [[Minecraft:Java Edition 1.18]].

'''Recipes'''
* Unhid the recipe to craft bundles and candles.

== Fixes ==
{{fixes|fixedin=21w19a
|;old
|101244|Can't scan for LAN worlds on macOS.
|105080|Ender Dragon is respawned if all Exit End Portal blocks are removed / legacy scanning is done for worlds with new dragon fight.
|136647|Leads don't work with Squids.
|165924|Snow particles render darker / almost transparent if the block light level is 7 or more.
|200009|Crash when using a non-mushroom block in a huge mushroom feature's cap.
|225815|A spawner has been replaced from a block of Stone.
|;dev
|203606|"X Candle Cake" should be "Cake with X Candle".
|203718|Lightning rod stays activated when struck by lighting at the same time as being moved by a piston.
|203757|Anvil character limit is too low for items with long names.
|204244|Sheep are rendered like white sheared sheep through tinted glass blocks.
|205268|Sideways lightning rods don't power redstone dust.
|205626|The command syntax order of {{cmd|item}} is inconsistent.
|208663|Pufferfish don't defend themselves from axolotls.
|208740|Withers attack axolotls that are playing dead.
|209533|Amethyst shard is not grouped with other gemstones in the Creative inventory.
|212206|Shulkers generating outside the world border bug out when trying to spawn.
|213774|Hanging roots float in your hand.
|213922|Shulkers are not spawned in the correct place.
|213943|Flying slightly above a big dripleaf can cause it to tilt without touching it.
|214127|Despite being a type of berry plant, bees don't pollinate cave vines.
|214283|Hanging roots break sound event uses <code>break3</code> twice, excluding <code>break4</code>.
|217626|Spore blossom is positioned rather strangely among flowers in Creative.
|219445|Bonemealing big dripleaf in flowing water doesn't update the water.
|219873|Lightning Bolt detecting lightning rod incorrectly.
|220106|Lightning hitting an entity on copper slabs on top another copper block fully cleans the bottom block first.
|220215|Opening a shulker box while an entity is standing on top of it pushes it too high for a short amount of time.
|221756|Snow particles do not render at all when the block light level is 7 or more.
|221844|Powder snow doesn't produce particles when broken by burning mobs.
|221957|Pick Block used on a level 15 light block returns a different item from the default light block.
|222738|Leads don't work with Glow Squids.
|222882|Spyglass in Search tab of creative inventory is mixed with block types instead of tools where it belongs.
|223132|Powder snow doesn't produce a breaking sound or subtitle, when destroyed through extinguishing a burning player, mob, or flame arrow.
|223171|Budding Amethyst and Copper variants are far away in the creative inventory.
|223446|Shulkers appear in the wrong place when riding an entity.
|223820|Azalea & Flowering Azalea aren't part of the block or item tags for <code>#saplings</code>.
|223907|Moss block appears in the <code>#lush_ground_replaceable.json</code> twice.
|224325|<code>minecraft.used:minecraft.COMPOSTABLE_ITEM</code> doesn't increase when placing an item into a composter.
|224388|Ores and raw materials in smelting preview are off center.
|224389|Copper Ingots are no longer grouped in the crafting table.
|;previous
|224927|Infested blocks take twice as long instead of half the time.
|224972|Infested blocks have no effective tool.
|225025|Server side performance drop with dragon's breath area effect clouds.
}}</onlyinclude>

== Videos ==
{{slicedlime|L4Zcb3taWDg|oUEDh_K74p4}}

== References ==
{{reflist}}

== Notes ==
{{Notelist}}

== Navigation ==
{{Navbox Java Edition versions|1.1x}}

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Minecraft:Java Edition 21w19a - Revision history

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