Phantoms at high elevations will try to fly down after attacking the player instead of up

Mobs don't pathfind up snow banks unless the snow block before the full block is exactly 0.5 blocks high

Items with equivalent but differently ordered name objects don't stack

Using /testfor with SelectedItem tag sometimes fails

Zombies riding horses have great difficulty walking downhill to reach the player

Player Auto-Jumps (With Auto-Jump off) when exiting a stream of water beside a wall

Pressing ESC or [Inventory] in creative inventory opens search tab

Underlines in chat and /title command intersect each other, causing an ugly effect when fading

Invisible, unusable item in inventory when given at same time item stack is emptied

Mobs can't pathfind up stairs if there's carpet at the bottom

Shields don't block the moment they are raised

Crash When Opening Any World

Crash when Flying in Creative Mode

Crash When Flying in Spectator Mode

Selected Item's Attribute Modifiers Not Applying

generic.armor capped at 20 (Instead of 30) on Players

Some Attributes (generic.attackSpeed) Don't Stack Correctly (Operation 0)

Invisible Signs

Can Stop Flying in Spectator Mode and Cannot Change Game Mode

1.8 Custom Void World Gets 0-1 FPS in Some Regions on 1.9

Entering Invalid (In Range, No Associated Block) Metadata Value in /fill Gives Unknown Error

Water isn't Affected by Brightness Slider

Control/Command-Pick Block on a Named Tile Entity Gives +NBT Instead of Name

Custom Mob Spawners Cannot Spawn More than 1 Type of Entity

Command Blocks Lag When They Shouldn't

NoAI Silverfish Squirm

Incorrect Error Message for @e[type=!Player,c=1,r=1]

/entitydata on an Entity Being Summoned Kills It

Fill Clocks Run Slower, 8-10 Updates/sec. Rather than 20 Updates/sec.

/execute particle Leaves a False Particle Trail to 0,0,0

Smooth & Chiseled Sandstone & Chiseled Quartz has Incorrect Bottom Texture

Rubberbanding After Relative TP While in Air @ High Speeds

Minecraft Crashes When Opening a World

/spawnpoint Fails With Arguments

Custom Spawners of 1.5.2 Crash in 13w22a

MC 1.4.6 Crashes While at Top of Beacon Beam