also see ForestryMC/ForestryMC#2189

In short, Forestry multifarms no longer harvest Agricraft crops in 1.12 versions. I don't know if this issue is on your side or on theirs. Is there any code that was changed in such a way that it could break compatibility?

I tested it with AgriCraft 2.12.0 and Forestry 5.8.2.387 on the Infitech3 modpack.

Closing since we are moving to 1.16.