The Bug

Snapshot 24w21a added a new sound (block.vault.reject_rewarded_player) to inform players that the vault has already been looted. However, in my testing, I could not get this sound to play from a vault, even in a naturally generated one in a trial chamber.

It does exist, however, and can be played using the /playsound command.

The sound is presumably supposed to play if a player has already looted a vault and is trying to unlock it again using a trial key, as stated in the changelog:

Added sound effect to help players understand they've already looted a vault

When attempting to right-click (use) a trial key on a vault when it has already been unlocked, it does nothing - no hand animation and no sound.

Note that all of these issues affect ominous vaults as well.

How to Reproduce

1. Place down a vault.
2. Unlock the vault using a trial key.
3. After the vault has finished ejecting the items, attempt to unlock it again using a trial key.
4. Note how the block.vault.reject_rewarded_player sound does not play, nor does any hand animation.

Intended Behavior

Although unofficial, the intended behavior seems to be something like from slicedlime's video.

The hand animation and the block.vault.reject_rewarded_player sound plays in the video, which is what is probably expected.