Right click action of piston_extension still exists but cannot be triggered without modified client

The bug

The technical block moving_piston (class MovingPistonBlock, 20w07a Mojang name) still has the right click ability (method MovingPistonBlock.use(...)) to remove the block if no block entity is at its position (see MC-64378) but it can no longer be triggered without a modified client since the block has no hitbox.