Minecraft:Java Edition 15w46a

15w46a is the 40th Minecraft:snapshot for Minecraft:Java Edition 1.9, released on November 12, 2015.<ref>Template:Link</ref>

Changes

Now replace replaceable blocks such as Minecraft:grass, instead of trying (and failing) to be placed on them.

Rails

Hitbox for redstone is now smaller based on the connections, similarly to Minecraft:fences.

Now replace single snow layers when Template:Control on the top, instead of placing the water or lava in the air above the snow layer.

General

Mobs can no longer spawn inside blocks that block movement but are transparent, such as Minecraft:leaves.
Also, mobs can no longer spawn in blocks containing any type of Minecraft:rails, buttons, tripwire hooks, pressure plates, levers, redstone torches, redstone repeaters, comparators, or redstone dust.
Something about rendering has changed; screenshots taken with the exact same position, viewing angle, FOV, etc. as an equivalent screenshot in 15w45a or earlier will differ.Template:Info needed

Smaller than before.
Chance to drop a rabbit's foot is now 10% + 3 percentage points per level of Looting (was 2.5% + 1 percentage point per Looting).
Now only spawn in deserts, flower forests, taiga, mega taiga, cold taiga, ice plains, ice mountains, ice plains spikes, and "hills" and "M" variants of these biomes. Even in these biomes, spawn chance is somewhat reduced (weight 4 out of 44–52 rather than 10 out of 50–58).
Are faster when panicking.
No longer prefer begging for food to mating.
Non-killer rabbits now avoid players within 8 blocks and most hostile mobs within 4 blocks (except slimes, magma cubes, and ghasts), and move faster when doing so. Also, avoidance range for wolves was reduced from 16 to 10 blocks.
Health reduced from Template:Health to Template:Health.
Naturally-spawned rabbit's skin depends on the biome. When breeding rabbits, there is a 5% chance the baby matches the biome rather than either parent.
- In a snowy biome, 80% white and 20% black & white.
- In a desert or desert hills, 100% gold.
- Otherwise, 50% brown, 40% salt & pepper, 10% black.
MoreCarrotTicks no longer has any effect.
- When destroying crops, MoreCarrotTicks is set to 40 rather than 100.
Rabbits eating carrot crops now reduces the growth stage by 1 level, only removing the crop block entirely if the growth stage was 0.

No longer leave a trail of snow if the Minecraft:game rule mobGriefing is false.

Collar, when tamed, is now red, as it had been in releases before 1.8, rather than orange.

Now require a 16 block square radius of deep ocean, not just a single deep ocean block at the center.

Now is collected at the middle rather than at the head.
- This means that if a large amount of experience is collected, it no longer blocks the player's view.
Blocks no longer drop XP when the doTileDrops gamerule is false.

Unlike most of the first-of-the-week snapshots, this was released on a Thursday instead of Wednesday, similar to the snapshots before Minecraft:14w26a.
15w46a was previously removed from the Minecraft:launcher for some time, but was added back in September 2018.