Villagers can't pick up wheat. Seeds are fine, and it seems every other crop is fine, even modded ones. But the wheat item specifically cannot be picked up with this mod on. Took me forever to narrow it down. I play with corn delight, but deactivating that and leaving this on still causes the issue. I also ran this mod in isolation and it still causes it.

Forge 47.3.0
Minecraft 1.20.1
MMLib version 1.5.17 (latest version available).

Edit: Backing up to the previous version of the mod (1.5.15) fixes the issue.