Pistons are getting powered in situations where they aren't supposed to be getting powered. Tons of examples down below. Also, when updating the bugged signal, the piston doesn't retract and remains retracted despite not being powered by anything, until you update the block. Basically a lot of weird shit happens with pistons that isn't supposed to happen.

EDIT: just realized im dumb and apparently this is intended and IS how pistons should work. imo its pretty dumb but idk how to delete reports so