found a glitch that when you grabed the block when it's on the button, pause, go outside the door and unpause, the cube will come to your hand, well becaus eyuo grabed it and you are in a different position.
yes i know, is just more easy to do The plataforms section, also the two things are super useful to get the golden box/Get the 4 boxes to the end (it would be funny if Somebody gets the 4 Boxes and get the golden box at the same time (sorry for the long reply) lol) :)