Minecraft 1.12 Pre-Release 1

Slab and stairs lighting incorrect

Most text boxes / chat / scroll bars revert when the window changes size, fullscreen mode is toggled, or fullscreened game is tabbed into

Eating a food item / drinking potion / curing zombie / feeding animal has a chance of also consuming a second food item / potion without any animation

Whether or not a player experiences some effect is calculated based on the block under the center of the player

Dismounting a horse with a fence on the player's right leaves the player on the wrong side of the fence

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

Several mobs can pop off paintings, item frames and leads and destroy minecarts, armor stands and anything in item form even when mobGriefing is turned off

Snow layers don't drop themselves when harvested with a silk touch tool

Your experience level overflows once it exceeds the integer limit

CTRL / CMD key get stuck on OS X / Text Box Backspace deletes whole word or whole line on Mac and Linux

Water, Cobwebs, Magma, Leaves and other blocks save sunlight

Messages/commands sent while in a bed won't be remembered in sent history

Mobs don't drop cooked meat if last damage is from fire, lava or fire charge

the hitbox of brewing stands is missing the blaze rod

Minecart with TNT/Hopper/Furnace lighting error

Primed TNT cannot travel through nether portals

A Comparator can lock a Repeater, but the Repeater doesn't look like it is locked

Wrong rendering order of particles, hitboxes, clouds, transparent blocks, breaking animations and various other transparent textures

Initialization of OpenAL fails sometimes

Wither skeletons and zombie pigmen won't go through lava to get to enemies, even though they can't burn

Villagers play the trade sound multiple times overlapping on shift-click

The Absorption effect has no texture for poison/wither hearts (appears empty instead)

Villagers'/ Witchs' right arm doesn't have the texture flipped. (Like zombies/giants/players/zombie pigmen/zombie villagers/Illagers' does.)

Splash Potion of Saturation has no effect

Baby wolfs spawn hurt

River through Eroded Badlands biome generates floating rock formations at water surface

Chat pop-ups being displayed when chat disappears

Slab and stairs lighting incorrect

Most text boxes / chat / scroll bars revert when the window changes size, fullscreen mode is toggled, or fullscreened game is tabbed into

Eating a food item / drinking potion / curing zombie / feeding animal has a chance of also consuming a second food item / potion without any animation

Whether or not a player experiences some effect is calculated based on the block under the center of the player

Dismounting a horse with a fence on the player's right leaves the player on the wrong side of the fence

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

Several mobs can pop off paintings, item frames and leads and destroy minecarts, armor stands and anything in item form even when mobGriefing is turned off

Snow layers don't drop themselves when harvested with a silk touch tool

Your experience level overflows once it exceeds the integer limit

CTRL / CMD key get stuck on OS X / Text Box Backspace deletes whole word or whole line on Mac and Linux

Water, Cobwebs, Magma, Leaves and other blocks save sunlight

Messages/commands sent while in a bed won't be remembered in sent history

Mobs don't drop cooked meat if last damage is from fire, lava or fire charge

the hitbox of brewing stands is missing the blaze rod

Minecart with TNT/Hopper/Furnace lighting error

Primed TNT cannot travel through nether portals

A Comparator can lock a Repeater, but the Repeater doesn't look like it is locked

Wrong rendering order of particles, hitboxes, clouds, transparent blocks, breaking animations and various other transparent textures

Initialization of OpenAL fails sometimes

Wither skeletons and zombie pigmen won't go through lava to get to enemies, even though they can't burn

Villagers play the trade sound multiple times overlapping on shift-click

The Absorption effect has no texture for poison/wither hearts (appears empty instead)

Villagers'/ Witchs' right arm doesn't have the texture flipped. (Like zombies/giants/players/zombie pigmen/zombie villagers/Illagers' does.)

Splash Potion of Saturation has no effect

Baby wolfs spawn hurt

River through Eroded Badlands biome generates floating rock formations at water surface

Chat pop-ups being displayed when chat disappears