[Bug]: Invertory open freeze

[Spikesx]

Steps to Reproduce the Bug

So on the mod pack FTB StoneBlock 4 If i have the server on a linux server host when i open my invertory on a windows pc it freezes my game and client log keeps saying its adding and removing items. But when i put the same files on my windows pc and run the server it runs it just fine. I can add anything if you need it.

Expected Behavior

I don't know

Actual Behavior

Open invertory and client freezes not the server. Nothing happens to the server end of things.

Mod Pack URL (Optional)

https://www.curseforge.com/minecraft/modpacks/ftb-stoneblock-4

Mod Pack Version (Optional)

1.2.0

Extra Notes (Optional)

No response

latest.log

https://mclo.gs/HYbhtWu

[mezz]

Thanks for the report! This seems to happen every time items are added and removed: [26Nov2025 20:27:22.442] [Render thread/INFO] [Moonlight/]: Synced supplementaries-common.toml configs Please report this issue to supplementaries, maybe that mod is causing the problem.

[Spikesx]

So i removed that mod and its still freezing my client. I also just removed JEI and the freezing stops. This is the report with Supplementaries removed https://mclo.gs/Ad6olyD

[mezz]

Thanks for the update!

Now it seems clear that Moonlight is still logging every time as well

[27Nov2025 10:08:29.843] [Render thread/INFO] [Moonlight/]: Synced amendments-common.toml configs
[27Nov2025 10:08:29.843] [Render thread/WARN] [net.neoforged.fml.config.ConfigTracker/]: Overwriting non-null config LoadedConfig[config=SynchronizedConfig{DataHolder:{general=SynchronizedConfig{DataHolder:{extra_debug=false, extra_children_debug=false, faster_cache_search=true, global_datapacks_folder=moonlight-global-datapacks}}}}, path=null, modConfig=net.neoforged.fml.config.ModConfig@70d771b7] at path moonlight-common.toml with synced config
[27Nov2025 10:08:29.843] [Render thread/INFO] [Moonlight/]: Synced moonlight-common.toml configs

I am not sure which mod is causing the issue here, but you should be able to find out by removing more mods.

[Spikesx]

I just removed jei and added EMI and that seems to work for the most part, I also made a report on the FTB github. So i thank you for your help. Once they get to reading my report they might figure it out better then me. So thanks for you help and time

[Spikesx]

So with your lastest update i can now see what is tripping jei up, https://mclo.gs/bLyvl2D

[mezz]

Thanks. I wouldn't really say this is a JEI issue, there is just some mod that's adding and removing stuff rapidly which is causing a problem. Changing to EMI works because nothing is trying to add and remove items from it.

Can you please report this to create_connected and link back to this issue?