Versions

Betweenlands version:

3.6.0

Forge version:

1.12.2-14.23.5.2847

Singleplayer or Multiplayer:

Singleplayer

Installed mods:

Betweenlands
Phosphor
Optifine

Description of the problem

How to reproduce:

1. You will need any type of "puller" mob (Chiromaws/Fireflies/Dragonflies) and attach them to the Draeton as you would normaly.
2. When you want to get them back in your inventory press click-shift to pull them in (the bug might not trigger if you're slow).
3. Some of the pullers' icons might flicker and you will see them both in the Draeton's inventory and in your inventory.
4. Close the interface of the Draeton, the duplicated puller mobs will have disapeared.

Expected result:

The Chiromaws (or any of the puller mobs) should get back in your inventory without staying on the Draeton interface.

Actual result:

Instead, the puller mob you will have shift-clicked on will both stay on the Draeton (despite actually disapearing outside of the interface) and you will have the mob both in and out of your inventory as long as you intercat with the Draeton.

Pictures:

https://youtu.be/g4-z2kk5zL4

Can confirm this bug exists on the latest version (v3.6.0)

confirm