Items thrown and harvested in a world will not render in 3d. This happens in all gamemodes on any world. Also seems to be affecting the textures of some entities but, that's just a cosmetic issue. Items harvested by the player and from the creative mode are affected.
EDIT: I was in fast graphics not fancy, which is why it wasn't rendering properly
Items only render in 3D if you are in Fancy graphics. Are you?