I'm going to release the two recent additions (waterloggable and item decay) and then port the mod over to 1.18.2 within the next day or two.

Commit 69c9cb8 resolves this.

I'm going to more than likely still add things to this mod for 1.18.1 (and 1.18.2), at least until all the other mods my server uses have upgraded to 1.18.2. :)

Closing!