Playing Dungeons Dragons & Space Shuttles, 5.5a
Minecraft 1.12.2
Forge 12.23.5.2836
Placing any liquid-holding tank or item that holds/remembers RF or internal inventory (empty shulker box or IE crate) over an empty hopper (vanilla), then breaking it will likely (though not 100%) duplicate the item and its contents while AutoPickup is active.
Shulker Box (empty)
Immersive Engineering Crates
Any Fluid tank from FluidTank
RF Tools Remote storage (with memory modules full of items)
Thermal Dynamics Energy Cell
Playing Dungeons Dragons & Space Shuttles, 5.5a Minecraft 1.12.2 Forge 12.23.5.2836
Placing any liquid-holding tank or item that holds/remembers RF or internal inventory (empty shulker box or IE crate) over an empty hopper (vanilla), then breaking it will likely (though not 100%) duplicate the item and its contents while AutoPickup is active.
Screenshots and video link attached.
Short Video demonstrating bug: https://transfer.sh/11lkld/2019-07-24_00-04-43.mp4
Thanks for reading. :2)