Bug Description

Disable Dynamic Resources:

Enable Dynamic Resources:

Reproduction Steps

1. Install AE2 19.1.2
2. Install ModernFix 5.20.0
3. Enable Dynamic Resources
4. Place controller from AE2, and give it power
5. set time to night and see

Log File

https://mclo.gs/M1BFXuH

This is caused by AE2 mixing into vanilla's model handling instead of using the platform-provided APIs. I have fixed this for 1.21 here (AppliedEnergistics/Applied-Energistics-2#8322) but I'm not sure it will get backported to 1.20.1.

I've tried porting your implementation back to Forge 1.20.1, hopefully without any issues.
AppliedEnergistics/Applied-Energistics-2#8325

They may not accept it there, because add-ons could be relying on the unlit feature for their own models, but it's worth a shot.

I can only think of my own add-on (Fullblock Energistics) making use of the UnlitQuadHooks extension, but I've so far already removed that in 1.21.1 in favour of the native NeoForge solution and I'm quite happy to do the same for 1.20.1 as well.

Should be solved by AE2 15.3.3 on 1.20.1, and the corresponding latest version for 1.21.1.