Chest item duplication

items get duplicated when "pick block" is used on a full chest

steps to produce problem
place chest in creative mode
fill chest with items
use "pick block" button on chest
place that chest from hotbar
all items in the placed chest were duplicated from first chest

bug persists after log-off log-on

when the copied chest is in the inventory it appears to have the added purple text of "+NBT" underneath and it does not stack with other chests