attempting to take items out of a shulker box in the inventory using easy shulker boxes crashes the game

[veccyboi]

Describe the bug

i use a mod called easy shulker boxes (https://modrinth.com/mod/easy-shulker-boxes), which allows you to hover over a shulker box in your inventory and take items out of it without placing the box down. recently, i upgraded all my create addons (including petrol's parts and petrolpark library) to create 6.0.8. however, this has now caused the game to crash whenever i try to take items out of an in-inventory shulker box using easy shulker boxes.

i highly suspect that petrolpark's library may have something to do here, as:

1. this did not happen in a nearly identical backup modpack with petrolpark v 1.4.11
2. petrolpark's library is mentioned as a suspected mod in the crash report

To Reproduce

1. install petrolpark library 1.4.23 and easy shulker boxes 8.0.2 for forge 47.4.0
2. load into a world, get a shulker box and put something into it. break the shulker box and pick it up. hover over the box to bring up the menu showing what items are inside. scroll to the slot with the thing you put inside and try to right-click to take it out.
3. game crashes with a NullPointerException

Expected Behavior

the item gets taken out without crashing.

System Information

full modlist: chosen's modded adventure with immptl create v6.0.8 test.html

Additional context

debug.log (as a google drive file since it's too big to fit in mclogs or upload here): https://drive.google.com/file/d/1YM3DdjIZ79E1SYxiSTS--p4s425t01el/view?usp=sharing
crash report: https://mclo.gs/78lhRAy
the crash report does also list quark and zeta as suspected mods, but i'm not sure if they have anything to do with this issue, as this issue is not present when using petrolpark library 1.4.11 and their versions did not change at all when i upgraded the modpack.

[JAWredstoneguy]

I had a similar issue except with putting items into the shulker box using quark's expanded item transferring, so quark may be playing a bigger role than you expected.

[veccyboi]

actually, you seem to be right
the same crash occured when i disabled easy shulker boxes but not quark, loaded a world, and tried to put an item into a shulker box directly in the inventory.

the game crashed the tick the gui even attempted to render (i didn't even get the chance to put the item inside)

clearly, though, something is still up with petrolpark as this never happened with older versions of petrolpark and quark has never changed versions

[JAWredstoneguy]

Okay, I tested using petrolpark library version 1.4.25, and the crash still happens.

crash-2026-01-18_15.08.27-client.txt

latest.log

[veccyboi]

can confirm

i have crashed my game several times now by accidentally hovering an item over a shulker box
using petrolpark library 1.4.25, the latest version available for forge 1.20.1