It works as of 4 versions ago in spigot. However now, upon viewing it with every different item, and every different server build, as of ~4 builds ago (working on the 4th version), it is broken. I've tested it on both the main server which I work for, and our dedicated test server, obtaining a new jar from buildtools for each server, trying to see if it was just a faulty download. However, this doesn't seem to want to work.