Block Texture Unloaded

When a item entity which is a block is in my loaded chunk or when I (not other player if it's not a block) put drop any item blocks disappear except special render block (ex:Water,Lava,Chest...) in inventory and in game.
I need to go to ressource pack and click on done to reload good texture.
From 14w03b to 14w06b it bug always, need nothing to bug.
Any error in the console.