Astral Sorcery Tree Beacon


Recently noticed that the Astral Sorcery tree beacon does not work on our servers. Chatted with the mod devs and they think it has to do with Sponge or Grief Prevention. Since it is not inside a claim, and GP wouldn’t block it, I came here.
Essentially what it is supposed to do is convert an oak tree to a ghost form of it that drops wood and apples and saplings (for a tree farm essentially), but it is not catching the growth event so the trees are never converted to the ghost form.
Here is the wiki entry for it:
Any ideas what we can change to get this working on our servers?
Let me know!