Update zu v 1.8 [Pre-Release]

General Bugs

The following seem to effect both Windows and Mac and both game modes. Unconfirmed / unproven bugs have a (?) next to them.
Gameplay

holding right click no longer places blocks continually (May be intentional, but is annoying)

Reports of Endermen picking up player-placed blocks.
Holding down left click emptyhanded (punching) doesn't continually punch certain items. (minecarts)

Lighting

Visible flickering seen in room lit with torches/fire/glowstone. (may be intentional)
Placing a torch underwater will leave light in that area even after the torch is destroyed by the water. [1]
Powered Minecarts aren't having lighting applied in torchlight/fire/glowstone. [2] Powered Minecart on the left
Pictures with a block directly above them will stay black.

Graphical

Missing "cracking" animation on chests when breaking them.
Storage Carts have the chest part in an odd location. [3]
sides of grass blocks not the same colour as top

Stability

A number of players are experiencing crashes and errors. Further info is required here.

One such crash involves playing the game at high performance. After a few minutes, the game will simply close itself.
Another crash seems related to changing the state of a furnace. Simply putting in smeltable items and fuel, or completing a smelt, can crash the game.

Animals

Burnt chickens and cows do not drop their cooked flesh like pigs do, but drop raw flesh instead
The poisonous spiders get stuck in ceilings 1x1 holes, the can get in but keep jumping up and down out of the hole, but are actually stuck. They also get stuck at the ceiling layer if it is out of cobweb.
The Poisonos Spider Spawner has a turning pig (probably no icon yet).

Weather

Rain STILL occurs above the cloud layer!
Rain always has the same intensity and volume, beginnings and ends are sudden

General Survival Bugs

The following seem to effect Survival mode on Windows and Mac. Unconfirmed / unproven bugs have a (?) next to them
Gameplay

F6 used in Creative mode to fast forward the day/night cycle also works in Survival.

Crafting

Major Item Duplication Bug: put an item into the crafting table's interface -> double tap E -> when the item ejects from the table and you pick it up automatically, move the item/stack in your inventory, another of that item appears singularly in your inventory. The singular item is infinite, the initial stack is not.

---Also, items ejected from the crafting table produce extra bouncing icons (sprites?) that seem to adhere to the standard decay timer of dropped items. This may be tied to the duplication issue.

---Works with crafted items and blocks, even dirt.

---Workaround: Wait for the extra dropped items to decay and put the duplication item on top of an incomplete stack.
General Creative Bugs

The following seem to effect Creative mode on all operating systems. Unconfirmed / unproven bugs have a (?) next to them
Gameplay

A number of items/blocks are missing from the inventory menu (water/lava/bonemeal etc)
Entering the void causes player death (probably not a bug) (unconfirmed)
You can fall through the y=0 layer inside the void and probably won't find your hole you came from

Tools

Shears don't cut leaves

General Multiplayer Bugs

The following seem to effect CMP/SMP modes on Windows and Mac. Unconfirmed / unproven bugs have a (?) next to them
Creative Single Player 1.8 (CSP) Windows

Unconfirmed / unproven bugs have a (?) next to them. Observed on Windows OS, may exist on Mac OSX
General

You can punch mobs from a very long distance.

Torches

Underground auto-generated torches does sometimes not generate propely, whereas it is turned away from the block it is on, or does not generate light.

Survival Single Player 1.8 (SSP) Windows

Unconfirmed / unproven bugs have a (?) next to them. Observed on Windows OS, may exist on Mac OSX
General

(?) Hitting a dirt block with a sword in Survival causes a "Saving Chunks" crash.

Boat

Occasionally, boats are unresponsive and do not move when the player turns.


Lighting

Chests placed in a world created before 1.8 may appear to be a black box. [4]

---Workaround: place a torch close to the chest, the lighting glitch will correct itself, then you may remove the torch.

The hand's lighting seems to randomly skip between normal and dark in first person. [5]

Beds

Using a bed in survival will occasionally cause it to skip to sunset instead of sunrise.

Doors

(?) For some players, doors do make a sound when left clicked

Furnace

Sometimes when the Furnace toggles between displaying the burning animation and not displaying it, the game crashes with a "Saving Chunks" crash.

Lava

(?) Swimming in lava causes the screen to become black. EDIT: It actually causes the render distance to be very low (you can only see a few blocks in front of you), and the fog is black.
Player can will catch and remain on fire upon contact with lava, even in creative mode.

Mobs

Endermen make sounds identical to those of a Zombie. It is unknown if this is an intentional placeholder or not.
Enderman and Squid to not drop experience points upon death.
Chickens lay eggs way too often.
Occasionally a spider when suffering damage will glow much more brightly than normal. See here.

Repeater

Active Repeaters (5-clock, ect) need to be manually reset every time you open a world from a save.

Survival Multiplayer 1.8 (SMP) Windows

Unconfirmed / unproven bugs have a (?) next to them. Observed on Windows OS. May exist on Mac OSX
Building

Stone blocks destroyed by a wooden pickaxe turn into Iron ore immediately after being destroyed. Stone blocks drop cobblestone before turning into Iron ore. If you destroy the Iron ore you will receive the drop. If Iron ore is left alone it will disappear after a few seconds.

Frequency of occurrence: Every few blocks.

General

Servers may experience lag upon the death of a player who is carrying many experience orbs.
Servers still running pre-1.8 maps may experience major lag
(?) Some people are unable to eat food.
(?) Some people's Hunger Bar never diminishes.

Graphics

When it starts raining there are places where you can see the rain but not the bouncing particles and places where you can see the particles but not the rain. See here.

Whenever you are in third person view and you get inside the water while the camera stays above the surface the screen will turn blue as if the camera itself was underwater. See here.

Mobs

(?) Endermen are unresponsive and do not interact with the player.

Flying

If a player is flying and then is moved from Creative to Survival he/she will not be able to stop flying until moved back to Creative.
While swimming water may act weirdly

Server Crash Report

I've had this happen after a player teleported to me. Note I was getting "not enough RAM" warnings on startup of the software although I have 6GB. No mods, fresh download. Hosting with Hamachi.