Memory leak issue

[CakoB]

Modpack

FTB StoneBlock 4

Modpack version

1.0.3

Launcher

CurseForge

Describe the bug

I believe I’ve encountered a memory leak issue related to FancyMenu’s screen customization layer registration. After playing for a while, the game gradually consumes more and more memory until it eventually freezes or crashes with an OutOfMemoryError in the render thread.
This is the third time today. I updated to 1.0.3 after the first time.

Steps to reproduce

Just play

Log Files

[02nov.2025 11:43:14.424] [Render thread/INFO] [de.keksuccino.fancymenu.customization.layer.ScreenCustomizationLayerHandler/]: [FANCYMENU] ScreenCustomizationLayer registered: ca.teamdman.sfm.client.screen.ManagerScreen
[02nov.2025 11:43:23.723] [Render thread/INFO] [de.keksuccino.fancymenu.customization.layer.ScreenCustomizationLayerHandler/]: [FANCYMENU] ScreenCustomizationLayer registered: net.tarantel.chickenroost.screen.Roost_Screen
[02nov.2025 11:43:37.609] [Render thread/INFO] [AllTheLeaks/]: Listing events...
[02nov.2025 11:43:37.609] [Render thread/INFO] [AllTheLeaks/]: World join: 1
[02nov.2025 11:43:37.609] [Render thread/INFO] [AllTheLeaks/]: Singleplayer: 1
[02nov.2025 11:43:37.609] [Render thread/INFO] [AllTheLeaks/]: Multiplayer: 0
[02nov.2025 11:43:37.609] [Render thread/INFO] [AllTheLeaks/]: Client Level Updates: 3
[02nov.2025 11:43:37.609] [Render thread/INFO] [AllTheLeaks/]: Client Player Clone: 1
[02nov.2025 11:43:37.609] [Render thread/INFO] [AllTheLeaks/]: Listing memory leaks so far...
[02nov.2025 11:43:37.609] [Render thread/INFO] [AllTheLeaks/]: B: 4460MB / C: 4546MB / Diff: +86MB
[02nov.2025 11:43:37.609] [Render thread/INFO] [AllTheLeaks/]: Memory Leaks detected: (/atl force_refresh to update)
[02nov.2025 11:43:37.609] [Render thread/INFO] [AllTheLeaks/]: | Player:
[02nov.2025 11:43:37.609] [Render thread/INFO] [AllTheLeaks/]: |- LocalPlayer (minecraft): 1
[02nov.2025 11:43:37.609] [Render thread/INFO] [AllTheLeaks/]: | ChunkAccess:
[02nov.2025 11:43:37.609] [Render thread/INFO] [AllTheLeaks/]: |- LevelChunk (minecraft): 117
[02nov.2025 11:43:37.609] [Render thread/INFO] [AllTheLeaks/]: | Level:
[02nov.2025 11:43:37.609] [Render thread/INFO] [AllTheLeaks/]: |- BlockTestLevel (supplementaries): 1
[02nov.2025 11:43:37.610] [Render thread/INFO] [AllTheLeaks/]: |- ClientLevel (minecraft): 1
[02nov.2025 11:43:57.969] [Render thread/INFO] [de.keksuccino.fancymenu.customization.layer.ScreenCustomizationLayerHandler/]: [FANCYMENU] ScreenCustomizationLayer registered: net.tarantel.chickenroost.screen.Breeder_Screen
[02nov.2025 11:44:10.848] [Render thread/INFO] [de.keksuccino.fancymenu.customization.layer.ScreenCustomizationLayerHandler/]: [FANCYMENU] ScreenCustomizationLayer registered: tfar.metalbarrels.client.MetalBarrelScreen

Expected behaviour

Don't crash.

Has the pack been modified

No

Additional information

No response

[CakoB]

If I turn off Fancy menu, the error still occurs.

[02nov.2025 12:30:21.777] [Render thread/INFO] [ChunkBuilder/]: Started 10 worker threads
[02nov.2025 12:30:21.804] [Render thread/INFO] [ChunkBuilder/]: Stopping worker threads
[02nov.2025 12:30:21.825] [Render thread/INFO] [ChunkBuilder/]: Started 10 worker threads
[02nov.2025 12:30:42.372] [Server thread/INFO] [KubeJS Server/]: Loaded Java class 'top.theillusivec4.curios.api.CuriosApi'
[02nov.2025 12:30:42.384] [Server thread/INFO] [KubeJS Server/]: Home dim: ResourceKey[minecraft:dimension / ftbteambases:private_for__cakob__20251029_222526]
[02nov.2025 12:30:42.385] [Server thread/INFO] [KubeJS Server/]: Home pos: BlockPos{x=0, y=132, z=0}
[02nov.2025 12:30:42.443] [Render thread/INFO] [net.minecraft.client.gui.components.ChatComponent/]: [System] [CHAT] Opening a Time Door to Your base...
[02nov.2025 12:30:43.986] [Render thread/INFO] [Iris/]: Reloading pipeline on dimension change: compactmachines:compact_world => ftbteambases:private_for__cakob__20251029_222526
[02nov.2025 12:30:43.987] [Render thread/INFO] [Iris/]: Destroying pipeline compactmachines:compact_world
[02nov.2025 12:30:43.987] [Render thread/INFO] [Iris/]: Creating pipeline for dimension ftbteambases:private_for__cakob__20251029_222526
[02nov.2025 12:30:43.988] [Render thread/INFO] [ChunkBuilder/]: Stopping worker threads
[02nov.2025 12:30:44.009] [Render thread/INFO] [ChunkBuilder/]: Started 10 worker threads
[02nov.2025 12:30:44.012] [Render thread/INFO] [ChunkBuilder/]: Stopping worker threads
[02nov.2025 12:30:44.029] [Render thread/INFO] [ChunkBuilder/]: Started 10 worker threads
[02nov.2025 12:31:38.112] [pool-28-thread-1/INFO] [com.sunekaer.sdrp.discord.RPClient/]: Sent state to discord: {"assets":{"small_image":"menu","small_text":"Main Menu","large_image":"logo","large_text":"Pack Logo"},"instance":false,"buttons":[{"label":"Join us on Discord!","url":"https://go.ftb.team/discord"},{"label":"Download the FTB App","url":"https://go.ftb.team/app"}],"timestamps":{"start":1762082612},"state":"Main Menu"}
[02nov.2025 12:32:19.605] [Render thread/WARN] [mezz.jei.library.recipes.PluginManager/]: Recipe registry plugin is slow, took 38.73 milliseconds. class dev.ftb.mods.ftbxmodcompat.ftbquests.jei.QuestRecipeManagerPlugin
[02nov.2025 12:32:19.704] [Render thread/INFO] [mezz.jei.library.ingredients.IngredientManager/]: Ingredients are being added at runtime: 21 net.minecraft.world.item.ItemStack
[02nov.2025 12:32:29.987] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: [CakoB: Gave 1 [ME Infinity Water Cell] to CakoB]
[02nov.2025 12:32:30.004] [Render thread/INFO] [net.minecraft.client.gui.components.ChatComponent/]: [System] [CHAT] Gave 1 [ME Infinity Water Cell] to CakoB
[02nov.2025 12:33:38.111] [pool-28-thread-1/INFO] [com.sunekaer.sdrp.discord.RPClient/]: Sent state to discord: {"assets":{"small_image":"menu","small_text":"Main Menu","large_image":"logo","large_text":"Pack Logo"},"instance":false,"buttons":[{"label":"Join us on Discord!","url":"https://go.ftb.team/discord"},{"label":"Download the FTB App","url":"https://go.ftb.team/app"}],"timestamps":{"start":1762082612},"state":"Main Menu"}

[CakoB]

[CakoB]

[CakoB]

I think the problem occurs when I go to the compactmachine dimension and then back.

[CakoB]

Now I'm sure the freezing is due to the compact machine dimension. If I go through and back, it freezes within 1 minute... but if I don't go in, it doesn't freeze at all. After I return to the basic dimension, the RAM usage starts to increase rapidly and freezes.

[pietro-lopes]

Latest Compact machine should have this fixed already:

• crashing when opening preview of Compact Machine CompactMods/CompactMachines#610 (comment)