Sculk Sensors outside of the world border can detect vibrations
If you change the size of the world border after it detects you, the sensors will fire after you do so

Steps to Reproduce

1. Find a Deep Dark biome and stand next to a sculk sensor
2. Shrink the world border so the sculk sensor is outside while you are inside
3. Create a vibration the sculk sensor can detect
4. Expand the World Border to put the sculk sensor on the inside
5. Sculk Sensor fires