Large storage shelves in storage room fling items everywhere

in the large storage area - the storage shelves when you compress them and make them large again, all items bounce around and fall off the shelves - maybe if there was some sticky mechanism on them so the items didnt fly around everywhere - at the moment i can only use them when they are closed up otherwise unusable. (photo is after i've pushed the shelves up and down again - the pallets on the floor are what fell off)