Tried the new version in a clean 1.16.5 instance with only Forge and Forgery. The following features failed to initialize despite that:
Mobs Drop Less Metal
Dropped Items Don't Stack
Full Enchanting Cost

https://gist.github.com/IdrisQe/f2c426d3960558579bc475b601c23610

Known, actually. I was putting off fixing these as it was 4 AM.