Minecraft 16w40a

Fall damage is ignored for a couple of seconds when reloading into LAN or singleplayer worlds

Chunks do not delete properly remaining in a newly created world if the same world name is reused

Grass / Flowers / Snow are placed incorrectly in newly created chunks

Pets disobeying sit commands by helping player when attacked and within a certain radius

Walking on blocks less than 1 block tall placed on ice, slime blocks or honey blocks acts like walking on ice, slime block or honey blocks directly

Head rotates in the wrong direction while riding

Arrows shot at the top half of a door will float once the door is opened

You can attack and be attacked through glass panes

Entity Spawners spawn items and other entities inside blocks

Beacon effect removes potion effect of the same type

Cannot move backwards in Books while writing / Cannot copy anything from the book

Unable to write in a new blank Book and Quill after renaming it in an anvil

All arrow types lose their name/NBT data when shot and picked up

Mobs going out of fenced areas/suffocate in blocks when loading chunks

Redstone wire uses different criteria for connecting visually and logically

Wrong attack radius calculation damages/kills entities through blocks and corners

Pack of wild Wolves / Zombified piglins / Silverfish / Bees not becoming aggressive at one hit kill

View distance affects mob spawning

Walking over the corner of lava deals damage

Corner Cobblestone Wall Has Incorrect Collision Box

Snow doesn't form / cannot be placed on upside down slabs / stairs

Creative Mode Hotbar Glitch when using Number Key to exchange items slots

Naturally generated light sources (fire, glowstone, torches etc.) sometimes do not emit light

Fall damage is ignored for a couple of seconds when reloading into LAN or singleplayer worlds

Chunks do not delete properly remaining in a newly created world if the same world name is reused

Grass / Flowers / Snow are placed incorrectly in newly created chunks

Pets disobeying sit commands by helping player when attacked and within a certain radius

Walking on blocks less than 1 block tall placed on ice, slime blocks or honey blocks acts like walking on ice, slime block or honey blocks directly

Head rotates in the wrong direction while riding

Arrows shot at the top half of a door will float once the door is opened

You can attack and be attacked through glass panes

Entity Spawners spawn items and other entities inside blocks

Beacon effect removes potion effect of the same type

Cannot move backwards in Books while writing / Cannot copy anything from the book

Unable to write in a new blank Book and Quill after renaming it in an anvil

All arrow types lose their name/NBT data when shot and picked up

Mobs going out of fenced areas/suffocate in blocks when loading chunks

Redstone wire uses different criteria for connecting visually and logically

Wrong attack radius calculation damages/kills entities through blocks and corners

Pack of wild Wolves / Zombified piglins / Silverfish / Bees not becoming aggressive at one hit kill

View distance affects mob spawning

Walking over the corner of lava deals damage

Corner Cobblestone Wall Has Incorrect Collision Box

Snow doesn't form / cannot be placed on upside down slabs / stairs

Creative Mode Hotbar Glitch when using Number Key to exchange items slots

Naturally generated light sources (fire, glowstone, torches etc.) sometimes do not emit light