Java Edition 16w21a

{
 "title": "Minecraft 16w21a",
 "images": [
 "16w21a.png",
 "Java Edition 16w21a.png"
 ],
 "rows": [
 {
 "field": "''(link to Java Edition article, displayed as Java Edition)''",
 "label": "(link to Edition article, displayed as Edition)"
 },
 {
 "field": "May 25, 2016",
 "label": "Release date"
 },
 {
 "field": "(link to Snapshot article, displayed as Snapshot)",
 "label": "(link to Version types article, displayed as Type)"
 },
 {
 "field": "(link to Java Edition 1.10 article, displayed as 1.10)",
 "label": "Snapshot for"
 },
 {
 "field": "[https://piston-data.mojang.com/v1/objects/a48f966d00c5d9bf300c2b8407efb98df743bde8/client.jar Client] ([https://piston-meta.mojang.com/v1/packages/ccdf81a69335bc84fae0ae69663ae82f9e277a0d/16w21a.json .json])<br />[https://piston-data.mojang.com/v1/objects/12d65aa459d3e93643746dce14c100b05fbcdddf/server.jar Server]",
 "label": "(link to Tutorial:Installing a version#Manual version installation article, displayed as Downloads)"
 },
 {
 "field": "202",
 "label": "(link to Protocol version article, displayed as Protocol version)"
 },
 {
 "field": "503",
 "label": "(link to Data version article, displayed as Data version)"
 },
 {
 "field": "2",
 "label": "<span style=\"white-space: normal;\">(link to Pack format#List of pack formats article, displayed as Resource pack format)</span>"
 },
 {
 "field": "<span class=\"plainlinks\">[https://en.wikipedia.org/wiki/Java_version_history#Java_SE_6 Java SE 6]</span>",
 "label": "<span style=\"white-space: normal;\">Minimum Java version</span>"
 }
 ],
 "invimages": [],
 "footer": "<table style=\"margin: auto; word-break: break-word;\">\n<tr style=\"background: inherit;\">\n<td style=\"padding: 0.4em\" >[[Java Edition 1.9.4|<span style=\"margin-right:-0.35em\">◄</span>◄  1.9.4]]</td>\n<td style=\"padding: 0.4em\">'''[[Java Edition 1.10|1.10]]'''</td>\n<td style=\"padding: 0.4em\" >[[Java Edition 1.10.1| 1.10.1 <span style=\"margin-right:-0.35em\">►</span>►]]</td>\n</tr>\n<tr style=\"background: inherit;\">\n<td style=\"padding: 0.4em\">\n[[Java Edition 16w20a|◄  16w20a]]\n</td>\n<td style=\"padding: 0.4em\">''' 16w21a'''</td>\n<td style=\"padding: 0.4em\">\n[[Java Edition 16w21b| 16w21b ►]]\n</td>\n</tr>\n</table>"
}

16w21a is the second snapshot for Java Edition 1.10, released on May 25, 2016,^[2] which made minor changes to the behavior of blocks and items and fixed bugs.

NBT format

• FallFlying
  • Allows mobs to use elytra when they fall.
    • Mobs lose their ability to fly after touching the ground.

Bone blocks

• No longer transparent.

Dispensers

• Can now equip shields onto entities.

Rails (all types)

• Bounding box for ascending rails is a full block (formerly only ⁵⁄₃₂ of a block tall).

Structure blocks

• No longer emit light.
• Added "Structure Integrity and Seed" to load mode (NBT tags integrity and seed respectively).

Chorus fruits

• Can now teleport riders from their mounts.

Ender pearls

• Can now teleport riders from their mounts.

Fishing rods

• Can now pull items to the player.

Wolves

• No longer despawn.

End portals

• Now replace any blocks inside the portal frame ring when activating.

Villages

• Blacksmiths now generate with cobblestone in all biomes (rather than acacia logs in savannas and sandstone in deserts).

NBT format

• IsVillager and VillagerProfession tags are now fully removed, replaced by the ZombieType first added in 16w20a.

Particles

• fallingdust now can be summoned, making use of the params argument like blockcrack and several other particles do.
  • Example: /particle fallingdust ~ ~ ~ 0 0 0 0 1 0 @p 10 summons a particle matching the color of lava (block ID 10).

25 issues fixed

From released versions before 1.10

• MC-10046 – Random destination routine has a small statistical tendency to move more northwest (fix included).
• MC-28424 – Untamed wolves and ocelots disappear.
• MC-82425 – Insertion tag (tellraw) will not work on servers.
• MC-84422 – No teleportation from any vehicle.
• MC-93642 – XPOrb texture turns gray right before reaching player.
• MC-93830 – Wolf tail height is not based on ratio of health to maxHealth.
• MC-95910 – Unable to activate end portal with non-air blocks in the middle.
• MC-95973 – Adult horse/donkey pathfinding Issue: 1 block elevations treated as 'non-traversable' terrain in certain configurations.
• MC-96131 – /execute detect command causing entities within a chunk to be scoreboard reset.
• MC-96269 – Skeletons, stray, witches, blazes, guardians and snowmen cannot shoot while in boats.
• MC-97201 – Elytra stops working on relog.
• MC-97526 – Signs, banners, skulls and chests are flashing when item spawner is nearby.
• MC-97602 – Shift+clicking shield from inventory to shield slot.
• MC-99945 – Cooked fish with numeric IDs not imported properly.
• MC-101001 – Fishing rod cannot pull items.
• MC-101680 – Batching chunks.

From the previous development version

• MC-102052 – Structure blocks do not save properly.
• MC-102068 – fallingdust Particle doesn't seem to work.
• MC-102069 – Bone block is handled as a transparent block.
• MC-102085 – Polar bears get stuck in standing position.
• MC-102091 – Block hitbox/F3 crosshair issues.
• MC-102103 – Savanna village blacksmith buildings burn themselves down.
• MC-102125 – AreaEffectCloud with fallingdust particle crashes client "Exception while adding particle".
• MC-102209 – Structure blocks melt snow.
• MC-102238 – Surface-level abandoned mineshafts generate outside mesa and its variants.

• 16w21a was previously removed from the launcher for some time, but was added back in September 2018.