I was able to recreate with all pressure plates if the cushion is placed on top of the pressure plate. If the pressure plate is placed after the cushion (e.g. placing via looking at the side of an adjecent block) they will not break after activation.
I was able to recreate with all pressure plates if the cushion is placed on top of the pressure plate. If the pressure plate is placed after the cushion (e.g. placing via looking at the side of an adjecent block) they will not break after activation.