I put the attractor below a stone(whatever block) like this

|air | air | air
stone | stone | stone
store | acttractor | link -> blablabla

items can be moved to stone which upon the acttractor
but the items just become falling down from air then disappeared and back to air as a loop
I have to break the acttractor to stop this.

here is the video : https://youtu.be/gmZcIT_OytY

with the acttractor in version one works well.