A duplication glitch in 1.0.8 Win10 and MCPE!

A duplication glitch in 1.0.8 Win10 and MCPE, If you put a stackable item in a hopper that is connected to another hopper that is connected to the hopper you placed the item in it will go back and forth but i you take out the item, it will duplicate and you will have 1 of the item in your inventory and 1 that keeps going in the hoppers. It is a duplication glitch that needs to be fixed as quick as possible, it is very easy to descover because of being a glitched redstone machine. It will easily be a problem on realms.