problem with NBT item
using the paper, personalized items created by MythicMobs, stop working after the server is restarted, it does not happen if you are running a spigot server, when I see the old item generated before the server restarts and the new one generated afterwards, they have exactly the same NBT values, but they don't even stack!
but if you restart the server once, they will be the same item again, the problem is only in the paper server