Whenever an entity dies around a warden or sculk sensor, it detects a vibration. However, it seems that killing a marker also sends a vibration, even though it is otherwise intangible.

What I expected:

The marker is killed with no vibrations sent.

What actually happens:

A vibration is sent upon the death of the marker to nearby wardens and sculk sensors.

How to reproduce:

1. Summon a warden or place a sculk sensor.
2. Summon a marker with the command /summon marker to place a marker at the player's position.
3. Run the command /kill @e[type=marker].
4. Vibrations should be sent to the warden/sculk sensor.