while using grinder, there is bug with infinite coal dust

Versions:
Minecraft Version: 1.15.2
Forge: net.minecraftforge: 31.1.35
flux-4.12.4.jar
latest.log

Steps to Reproduce:

1. put stack of coal into grinder
2. output [ i have used xnet, not sure if this matter ] to barrel

no issue as such, just infinite coal dust

The fix was already done but it haven't been released yet (until now). Download Flux Library 3.1.6.