The bug
Playing a note block is not considered a vibration and does not trigger the sculk sensor.
Linked issues
is duplicated by 5
MC-207348
Note blocks don't trigger sculk sensor
Resolved
MC-207464
Sculk Sensor
Resolved
MC-209384
Sculk Sensor Not Detecting Noteblock Activation
Resolved
MC-212408
Sulck Sensor isn't detect note block
Resolved
MC-215713
Sculk sensors don't activate when a note block is played or when a juke box is played
Resolved
Can confirm.