Minecraft Wiki:Parity issue list

General

 * Shared block spaces
 * Food can be eaten in Creative mode and Peaceful difficulty
 * Mentions of player names are highlighted in yellow in chat
 * Arm-throwing animation when throwing snowballs/potions
 * Villager trade tables are stored as JSON files
 * Ability to start swimming in 1-block deep water

World generation

 * Huge mushrooms generate naturally in swamps
 * Igloos have white, magenta and brown beds, rather than red, have polished diorite instead of polished andesite, and packed ice instead of ice

Blocks

 * Snow affected by gravity
 * Snow melts in snowless biomes
 * Doors can be waterlogged
 * Enchanting tables emit light level 12
 * Leaves have snowy texture when snowed on
 * Melon drops 9 slices when mined with shears
 * Piston head model has more accurate "neck"
 * Pistons require 1 tick to retract
 * Pistons take longer to extend
 * Pistons finish extending before retracting
 * Redstone dust power transmittion is in a random order
 * Un-connected redstone dust is a plus, rather than a dot
 * Redstone dust connects to pistons
 * Glass panes and iron bars have 3D item model
 * Beds have 2D item model
 * Cauldrons can hold potions
 * Cauldrons are block entities
 * Water can be colored
 * Blocks that contain block entities can be pushed/pulled with slime blocks and pistons
 * (Ender/Trapped) Chest items look like a full block without openable latch (like the java chest model before 1.3)
 * Spawners in Creative mode inventory
 * Spawners are capable to contain no entity
 * Beds can set the spawnpoint of a player during the day
 * "Mushroom pores" block has an item form
 * Silk Touch makes grass path items drop

Items

 * Leather Horse Armor
 * Potion of decay
 * Book and quill and written book have 2 pages open at once
 * Fishing can give bamboo
 * Boats can smelt 6 items in furnaces
 * Bucket of tropical fish is named "Bucket of tropical fish name"
 * Maps show player heads instead of arrows
 * Teleporting with Ender pearls makes teleportation sounds

Entities

 * Baby squids
 * Parrots can dance on a player's shoulder
 * Spiders can spawn on leaves
 * Different Wither AI (summoning wither skeletons, charge attack, etc)
 * Minecart with command block uses repeating command block instead of impulse
 * Feeding mobs makes the corresponding food particles
 * Mobs can steer boats
 * Cave spider jockeys
 * Wither skeleton/stray spider jockeys
 * Naturally spawning baby animals
 * Second layer from players, drowned and zombie pigman is 3D
 * Drowned have glowing eyes and moth
 * Drowned spawn in swamps during the day
 * Drowned holding tridents use melee attacks when within 3 blocks
 * Same posture as players when holding anything in offhand
 * Elder guardian is a boss
 * Endermite attack endermen and golems without provokation
 * Witches attack golems without provokation
 * Ghasts have glowing eyes
 * Fishing bobber is 3D
 * Dropped 2D items don’t spin
 * Better leash knot physics
 * Iron golems can hurt players in peaceful
 * Baby zombies can ride many other mobs than just chickens
 * Pufferfish blow up when hurt
 * Vexes can have enchanted swords
 * Villagers flee when hurt by player
 * Fireworks shot by dispensers travel away from the dispenser, instead of always upwards

Effects

 * Fatal poison

Commands

 * Gamerules: drowningdamage

Sounds

 * Jumping sounds when jumping off of and landing on blocks
 * Silverfish and Endermites have walking sounds

General

 * Flattening (List for bedrock)
 * Blocks separated from fluids
 * 1.9 combat
 * Offhand slot can hold any item
 * Advancements instead of achievements

Blocks

 * (Stripped) wood item forms
 * (Stripped) wood on x and z axis
 * Cave and void air
 * Beacon beam color mixes, rather than only existing in the 16 colors.
 * Pistons, droppers and dispensers have Quasi-Connectivity
 * Sticky pistons drop blocks when power is removed before it’s done extending
 * Conduits give the Conduit Power effect to players in rain
 * Mushroom blocks have all sides cap texture when placed, and change to pores texture when ajent to another mushroom block of the same kind

Items

 * Shields
 * Spectral arrows
 * Debug sticks
 * Teleporting with chorus fruit makes teleportation sounds

Entities

 * Giants
 * Illusioners
 * Thrown/shot projectiles take thrower/shooter’s momentum into account (not always )
 * Mobs spawn with carved pumpkins and jack o' lanterns on their head, during halloween
 * Zombie pigman/drowned chicken jockeys
 * Spiders spawn with status effects on hard

Effects

 * Glowing
 * (Bad) Luck

Enchantments

 * Sweeping Edge

Command format

 * NBT access
 * 1.13 commands
 * Block state access

Unsorted

 * Crossbow handling mechanics are different. In Java, the arrow will only load onto the crossbow when the mouse button is released; holding the right mouse button will then fire and charge the next arrow. In Bedrock, the crossbow will automatically load the arrow when finished charging; holding the right mouse button will then fire but not charge the next shot until the player clicks again.