The Bug:

Sculk sensors are not activated upon beacons activating.

Steps to Reproduce:

• Build a 3x3 area of iron/gold/emerald/diamond/netherite blocks.
• Place a beacon in the center.
  →  Notice how when the beacon activates, the sculk sensor does not activate.

Additional Information:

Quote from the 20w49a Changelog, "A vibration is anything that causes physical motion". I would definitely consider this as physical motion, as a beacon is physically activating.