Urgent - Duplication glitch involving beacons

In MCPE(possobly other versions) if a player double taps a stack able item (which is used to fill the stack with all available items of its type), while the item is on one of the top 9 slots of the players inventory, while in a beacon, the item will double, as many times as possible.(ex: 2 to 4, 6-12, 32-64)

Notes:

Will not work on non stack able items

Will not work if the item you want to duplicate is not on one of the top 9 slots.

Will only work with beacons, and works regardless of beam

you can double infinity, but will stop if the stack is full, you can continue by placing the duped items in a chest or throwing them, and keeping a small amount to keep going.