Mobs Spawn Infinitely in Trial Chambers When Bell is Placed on Vault

Placing a bell directly on top of a trial chamber vault causes mobs to spawn infinitely, even after the trial is completed. This can lead to overwhelming numbers of mobs and severe lag.

Steps to Reproduce:

1. Enter a trial chamber and locate a trial vault.

2. Complete the trial normally so that the vault is accessible.

3. Place a bell directly on top of the trial vault block.

4. Wait a few seconds.

Observed Result:
Mobs continue spawning from the trial spawner even though the trial is marked as complete. No rewards can be claimed again, but mobs spawn endlessly until the bell is removed. Server or client may lag severely if left unattended.

Expected Result:
No mobs should spawn after a trial is completed, regardless of blocks placed on or near the vault.

Additional Notes:

• Removing the bell stops the spawning immediately.

• This issue persists in both single-player and multiplayer.