"""So how is this solved? The idea is simple: whenever the last item of a stack is withdrawn, the item itself stays in place at the same spot at 0 quantity, therefore putting a stop to unwanted shuffling. Any deposits of the item at a later date will replace the placeholder. This feature can be turned on or off."""
Seems like there's only 1 placeholder available at a time ^ as said directly from the webpage. I'm slightly don't like this update coming, it looks way to busy/crowded for my likings. But I'm not gonna directly shut er down until it comes in the game. Could change *fingers cross?*