Crash on startup with `mixin.perf.dynamic_resources=true` — incompatibility with Create: Teleporters

[Kur-Dev]

Crash on startup with mixin.perf.dynamic_resources=true — incompatibility with Create: Teleporters

ModernFix version: modernfix-neoforge-5.26.1+mc1.21.1
Minecraft version: 1.21.1
NeoForge version: 21.1.224
Create: Teleporters version: createteleporters-remastered-2.0.1d-neoforge-1.21.1.jar (latest) Create: Teleporters 2.0.2a

Description

When mixin.perf.dynamic_resources=true is manually enabled in config/modernfix-mixins.properties, the game crashes at startup during the title screen render phase.

The crash does not occur when:

• mixin.perf.dynamic_resources is removed/set to false (game launches fine with all other mods), OR
• Create: Teleporters is removed from the mod list (game launches fine with dynamic_resources still enabled)

This confirms the crash is a direct incompatibility between dynamic_resources and Create: Teleporters.

Exception

java.lang.IllegalStateException: Tried to lookup sprite, but atlas is not initialized
    at net.minecraft.client.renderer.texture.TextureAtlas.getSprite(TextureAtlas.java:144)
    at net.minecraft.client.gui.GuiSpriteManager.getSprite(GuiSpriteManager.java:23)
    at net.minecraft.client.gui.GuiGraphics.blitSprite(GuiGraphics.java:394)
    at net.minecraft.client.gui.components.AbstractButton.renderWidget(AbstractButton.java:35)
    at net.minecraft.client.gui.screens.TitleScreen.render(TitleScreen.java:289)

Crash Report

crash-2026-04-23_19_09_17-client.txt

Minecraft crashed. The logs have been uploaded to gnomebot.dev:

latest.log | debug.log head / tail (~47k lines) | crash-2026-04-23_19.09.17-client.txt | PrismLauncher-0.log | KubeJS: client.log / startup.log | crash_assistant_app.log | modlist.txt

Found �[2;34m1�[0m log analysis results:
�[2;34mCreate6Addons�[0m in: crash-2026-04-23_19.09.17-client.txt

Mod list changes on top of the modpack:

�[2;32m66�[0m added, �[2;31m1�[0m removed, �[2;34m1�[0m updated.

Steps to reproduce

1. Install ModernFix + Create: Teleporters on NeoForge 1.21.1
2. Add mixin.perf.dynamic_resources=true to config/modernfix-mixins.properties
3. Launch the game → crash at title screen

Current workaround

Disable mixin.perf.dynamic_resources in config/modernfix-mixins.properties, or remove Create: Teleporters.