In 21w05a, the shulker close event was added. However, I cannot get a shulker closing to trigger a sculk sensor. I can get the vibrations from it opening, but not from closing, no matter what I try
Also, just to clarify, shulker boxes use a different event; this event is not for that.
Cannot reproduce.
Possible that the sensor is still in cooldown when the shulker closes.
I was able to detect it by placing the sensor only after the shulker was open, but before it closed.