i will include a file of the world. the effected piston with the bug is inside the mechanism with the blue arrow on top. I placed 4 glass cross around the area to observe effected piston and I placed a piece of glass underneath the effected piston. pressing the button surrounded by glass 2 times ensures the glitch is visible. I apologize for the complicated way of reporting this glitch, but i do not know how to explain it simpler.