Minecraft 1.11 Pre-Release 1

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

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

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

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

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

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

Redstone torches schedule updates when they should not, causing unreliable timings.

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

No -breaking sound or- particle effect for some tools and all armor

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

Your experience level overflows once it exceeds the integer limit

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

Trapdoors are not toggled by pressure plates on slabs

Cured zombie villagers don't drop picked up items

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

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

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

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

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

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

Redstone torches schedule updates when they should not, causing unreliable timings.

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

No -breaking sound or- particle effect for some tools and all armor

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

Your experience level overflows once it exceeds the integer limit

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

Trapdoors are not toggled by pressure plates on slabs

Cured zombie villagers don't drop picked up items