Hello there! I found an issue with the "Play at (x) (y) (z) level: (1) pitch: (1) sound: (example.entity.sound) procedure
When you select the said procedure, scroll down for sounds, and there's a rare chance of finding some sounds that instead of having their names like "example.entity.sound" being replaced by a word that says "undefined"
In very rare chances, all the sound's names just say "undefined"
There's a solution for that, You just need to remove the procedure and place the same procedure again
I'm writing this because it's annoying. I'm using MCreator 1.9.1