MM hoes do not till soil

Summary

When creating a hoe item with MythicMobs, trying to till soil with it won't work.

Steps to reproduce

Use the following hoe item:

CustomHoe:
 Id: IRON_HOE
 Display: 'Custom Hoe'
 Enchantments:
 - DURABILITY 1

And attempt to till some soil.

Current behavior

When using the above item, the animation will play, as will the sound, but the dirt block will not actually become farmland/tilled soil.

Intended correct behavior

The dirt block should become tilled soil.