Java Edition 15w49a

15w49a is the forty-fourth snapshot released for 1.9.

Blocks & items

 * Cobweb
 * Cobwebs now do not break snowballs, eggs, potions, XP bottles, or ender pearls when thrown at; instead they form as an item in the cobweb.
 * Doors
 * Are now placed facing left/right depending on which half of the block you click on, unless neighboring doors cause them to place a certain way.
 * Elytra
 * Increased damage when flying into a wall.
 * Furnace
 * The  block is no longer available as an item.
 * Melons
 * Melons and glistering melons are now oriented the same way.
 * Trapped Chest
 * Now appears in the Redstone tab of the Creative inventory instead of Decoration Blocks.

Mobs

 * All mobs
 * Improved path finding
 * Zombies, Zombie Pigmen, Slimes, Magma Cubes, Wither Skeletons, Spiders, Cave Spiders, Silverfish and Endermites now fight back when hit by other mobs.
 * Snow golems
 * Shear normal snow golems to take their pumpkin.
 * Enderman
 * Can no longer pick blocks from behind walls.
 * Shulkers
 * No longer float above the ground.
 * Skeletons
 * No longer find shade to hide under if equipped with a helmet.
 * Horses
 * Now rotate with the player.

Other

 * Combat
 * Sweep attacks now do one heart of damage (previously 1/2 heart) to mobs affected by its knockback. (In a horde of 5 zombies, the one you attack takes full damage, the others take 1 heart damage.)
 * The Infinity enchantment no longer effects Spectral and Tipped arrows.
 * Lightning
 * No longer destroys item frames, leash knots, paintings, and armor stands.
 * Status effects
 * Health Boost effect now shows multiple red hearts instead of the one similar to Regeneration.
 * Absorption effect now shows a single red heart with a yellow outline around it.
 * Nausea effect will now stop instantly when cleared using Milk or with commands.
 * Commands
 * now auto-completes itself when pressing TAB.
 * now has a params parameter to specify particle parameters (for iconcrack_, …).
 * Statistics
 * : Tracks the distance a player has glided using elytra.