When I saw that sculk sensors had been released I was very excited. So I went onto the snapshot and tried to build the first thing I thought of; a 2x2 piston door but extremely compact. I built one that seemed to work fine but then when I tried to rebuild it and use it in a different place one side made an endless loop. I tried recreating the exact same circuit about 10 or 20 blocks away and it worked fine without making an endless loop. Or a clock.