Version Information

Forge: 34.1.42 and 35.0.18
Quark: 274 and 276
Iron Shulker Boxes: 5.1.2 and 5.1.9

Description

Duplication bug between quark's right-click on shulker box feature and iron shulker boxes. Boxes can be replicated by simply right-clicking with a stack to split it/insert.

Steps to Replicate

1. Create a few Iron Shulker Boxes, minimum of 4 required.
2. Attempt to split the stack by right-clicking and it gets inserted.
3. Inspect the remaining half-stack to find each shulker box now contains a copy of the original half. This is not limited to the shulker boxes; if the contents of the stacks are identical then you can duplicate any resources as well.

Notes

There are no logs available as no errors are emitted; disabling right-click feature and mitigate this for now.

Also reported at: progwml6/ironshulkerboxes#14