Relates to MC-132878, MC-123350, MC-135868 and MC-135869.
Since this is an instance of a block being broken, one would expect particles to form. This does not happen.
Rails and redstone components don't break / create particles when support block is broken
Armor stands destroyed by explosions/lava/fire don't produce particles
Anvils broken by falling or overusage do not produce particles
Gravity-affected blocks broken when falling into an invalid space do not make a sound or produce particles
Blocks directly replaced by other blocks do not produce particles, make breaking sounds or drop items where appropiate
Decaying leaves do not produce block breaking particles/sounds