Crash with Entity Texture Features on 1.20.1

[bons66]

MC 1.21.1 + Fabric 0.15.1 + large modpack (based on "Simply Optimized")

Crash with EnchantedShulkers 1.2.0
crash-2023-12-10_22.20.22-client.txt

Log with EnchantedShulkers 1.1.3 (OK)
latest.log

Tested mods (no crash):
adventurez-1.4.19.jar
dehydration-1.3.5.jar
sodium-fabric-mc1.20.1-0.5.3.jar
indium-1.0.27+mc1.20.1.jar
c2me-fabric-mc1.20.1-0.2.0+alpha.11.0.jar
BarteringStation-v8.0.0-1.20.1-Fabric.jar
PuzzlesLib-v8.1.11-1.20.1-Fabric.jar
ForgeConfigAPIPort-v8.0.0-1.20.1-Fabric.jar
ForgeConfigScreens-v8.0.2-1.20.1-Fabric.jar
brazier-fabric-6.1.1.jar
bygonenether-1.20-1.3.2.jar

[bons66]

After testing more than 300 mods... I found a conflicting mod.
Entity Texture Features

MC 1.21.1 + Fabric 0.15.1
Mods -
architectury-9.1.12-fabric.jar
cloth-config-11.1.106-fabric.jar
entity_texture_features_fabric_1.20.1-4.6.1.jar
fabric-api-0.91.0+1.20.1.jar
jei-1.20.1-fabric-15.2.0.27.jar
modmenu-7.2.2.jar
enchantedshulkers-mc1.20.1-v1.2.0.jar OR enchantedshulkers-1.1.3+1.20.1.jar

Crash with EnchantedShulkers 1.2.0
crash-2023-12-11_14.07.26-client.txt
latest.log

Log with EnchantedShulkers 1.1.3 (OK)
latest_OK.log

[RubixDev]

Looks like ETF v5.0 doesn't have this issue, but that's only available for Minecraft 1.20.2 onwards. I was however to get it working locally by playing with the Mixin priorities, just note that glint rendering on Shulker Boxes won't work with both the "Block entity random textures" and "Enable OptiFine random mobs" settings of ETF enabled. And fixing that is likely not easy, and I don't really want to put effort in that since it's already working with ETF v5.0.

[RubixDev]

The fix is available in v1.2.1 🎉