When an object in the players inventory bar is replaced by an empty slot, if it is tapped on an item frame it creates an identical copy of what was previously in the players hand.
Steps to reproduce:
1. Get an item in your inventory bar.
2. Go into your inventory and replace the item with an empty slot.
3. Exit your inventory and tap on an item frame to create a duplicate.
Linked issues
Comments 2
Duplicate issue: https://bugs.mojang.com/browse/MCPE-14136
Duplicate issue: https://bugs.mojang.com/browse/MCPE-14136