When a player sets their spawn point to a block in the Nether, and that block is occupied with a respawn anchor, when they die the sound for a respawn anchor depleting will still play when they respawn, even though they did not set their spawn with the respawn anchor.

To recreate:

1. Go to the Nether
2. Set a spawn point with /spawnpoint
3. Place a respawn anchor on the block where you just set your spawn point (does not need to be charged)
4. Die
5. The sound will play when you respawn next to the anchor