Being more pecisely, in Fast Graphics, at version 14w04b, you can see "block" items (with "block" items, I mean cuboid items, such cobblestone or any kind of ore) but you can not see not cuboid items (slimeballs, coal, diamonds, exporb, tools, weapons...).
Also, you can see how items travel to you. I mean, when you recollect them, you can see them that little lapse of time correctly.
I uploaded a screenshot of some exporbs showing right. (They travel long distance, so they are the easiest to try this.)
Another confirmed in 14w04b
It happens with a stone word with no enchantment, in survival mode.
I killed about 20 zombies, I get 24 zombie meat, 11 potatoes, 5 carrots and 4 iron bars.
As well https://bugs.mojang.com/browse/MC-45550 , killed about 20 zombies in survival with stone sword, collected 26 zombie meat, 11 potatoes, 5 carrots, and 4 iron bars.
Drop rate goes BOOM!
At 1.8:
The same goes for every sound, and opening and closing the inventory. Breaking grass, footsteps, getting objetcs, increasing exp, etc. You break something, press E before the sound stop, and then press E again, and you hear the sound.
I can understand that it happens presing 'Esc', because of some kind of sound bug or problem pausing and replaying a sound.
But opening the inventory? Why?
The amazing and lovely misteries of Minecraft.