Quantum Bag disappears if you open bag and swap with empty slot inside bag

[TronWoWGamer]

Steps to Reproduce

1. Create Quantum Bag
2. Place bag on hotbar and select bag (say slot #7)
3. Open bag from hotbar
4. Hover mouse over empty slot in bag and hit the hotbar number for the bag (say slot 7)

Bag closes and disappears.

[DerHope]

I'm playing version 1.16.4-5.3.0 (in the Direwolf20 FTB modpack) I cannot only duplicate this bug, but add to the description: the bug also occurs when ANY slot (emtpy or not) in the bag is moved via hotkey to the hotbar slot of the bag.

This has caused SERIOUS loss of inventory at least 5 times now and could only be "solved" by backstepping to a backup! PLEASE fix this issue. It would be much appreciated! Thanks!

[Ethan23p]

Very severe ):

[gigabit101]

Once I figure out how to stop this from happening it will be fixed, It's odd that this does not respect what items are allowed in the slot...

[gigabit101]

1.16.4 is no longer supported