Enchantments couldn't retreat due ItemStack serialization

[RandomByte]

That’s the same for me. But:

@RandomByte

The critical part is
ItemStackSnapshot deserializedItemStackSnapshot = Sponge.getDataManager().deserialize(ItemStackSnapshot.class, dataContainer).orElse(null);

The deserializedItemStackSnapshot isn’t null, that’s not the problem. The problem is that the data(here the author) is not present anymore. It was present in the deserialized DataView.

The deserialization from the DataView to the actual ItemStackSnapshot doesn’t work properly. The author data isn’t set onto the ItemStackSnapshot.