About Bug of spider web and Concrete Powder, Sand, Red Sand...

If you have pistons, spider webs, and any gravity blocks,
So let's get started!
Firstly, place the piston in any direction
Secondly, place spider webs within a block in the direction of piston ejection
Thirdly, place any amount of sand on top
Fourth: Place a button next to the piston
Fifth: Remove the bottom sand
Then click on that button, and you will find that the sand will expand and there is an item with a string