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.
Can confirm