Unknownreported this bug
Hello developer! I have confirmed that this issue does exist using the following method: When Player A has game sound disabled and Player B has game sound enabled, after Player A runs the command /mm test mechanic sound{s=ui.button.click;audience=caster} @self, Player B can still hear the sound.
My server version is 1.21.11 Purpur, and my MythicMobs version is 5.12.0-dev5654. By the way, if this can be implemented, I hope audience can also be used with the hologram mechanism :smile: