This is sign that you do not have enough RAM allocated. By no means is this a bug though.
32 render distance is only for people with enough RAM & a powerful enough computer. You can try allocating more memory, otherwise play on a render distance your computer is better suited for.
Confirmed for 14w31a, but I am not sure if it I would call it a 'bug'. If you are inside a block, the game considers you to be 'looking at' the block you are inside, and does not register that you are looking at the chest or entity outside of the block. I believe it has always been this way (but it was not of concern before the introduction of Spectator Mode). The F3 screen's "Looking at:" coordinates are evidence of this.
But I do think it would be good if this was changed for spectator mode, to allow clicking through/inside blocks (within reach).
Confirmed for Multiplayer in 14w31a. All players who received the particle effect (and sound and Mining Fatigue) at the water temple crashed simultaneously. Client-side crash only.
Confirmed. Numerous hostile mobs now target and damage Iron Golems. I do believe, to some extent, this was an intended feature. Not sure if creepers were supposed to be included on this change. If it was intended, it seriously messes with the usefulness and purpose of the Iron Golems.
Indeed, I have been having the same issues while working with command blocks.
Forgot to include that I am in Multiplayer
I experience this today, but I don't believe it is the behaviour you described.
My end (previously generated) still existed, only I found myself entering the End at the same coordinates as the End portal in the Overworld; the middle of nowhere in the End world.
Try entering the End in creative mode and stopping yourself from dying in void. Then teleport to near origin <0,60,0> which should be near the dragon fight. See if you spot any land (may require you to fly around a bit).
Let me know if you find anything.
This is obviously still a bug though. Unlike the Nether, coordinates should not relate between the End and the Overworld. You should always enter at the same location (the obsidian platform).
Let me know if I am wrong.