Beacon can duplicate stackables items

Beacons can duplicate stackables items.This affects Single Player World,LAN and Realms

How to reproduce:
1.Open settings go to video change the ui from classic to pocket
2.Get a beacon and items you want to duplicate (must be stackable)
3.Tap the beacon to open the ui then tap the items you want multiple times

Notes*
-In hotbar slots are the only space you can duplicate items
-any items can be stacked even till 16 to 64 can be duplicated
-None stackable items such as weapon,armor,tools,shulker boxes etc.Are not able to duplicate in this method

This exploit has been available since 1.16.40 to today's beta release