Piston Duplication Glitch

You "fixed" this in 1.11.1, you didn't. Basically, when you use a sticky piston to push a chest with items inside, if you remove the item that you want to duplicate just in time for the piston to pull the chest back, when you re-open the chest, the item will be duplicated. Please note that the timings are quite hard to nail. Also, It affects all versions of bedrock, not just android. I think