The bug

After a piglin has successfully hunted/killed something or finished inspecting gold, they will emit celebration/adimring sounds once and will never emit any sounds again after emitting it once. Brutes in the other hand are not affected.

Observe that in 1.16.1, they will emit celebration sounds and will continue emitting celebration sounds after the mob they're pursuing has been hunted or killed.

To reproduce

1. Spawn mutiple piglins and a wither skeleton/hoglin in a pre-release/snapshot of 1.16.2
2. Wait for them to kill the wither skeleton/hoglin
   → The piglins emit celebration sounds once, notice that they become silent but still celebrates
3. Spawn mutiple piglins and a wither skeleton in 1.16.1
4. Wait for them to kill the wither skeleton/hoglin
   → The piglins emit celebration sounds, and notice that they emit celebration sounds again.

Admiring gold

1. Throw a gold item at a piglin
   → It makes admiring noises once and then becomes silent.