Let user leave gaps between tiles and disable stacking stamped items (packery 2 or 1)

Hello.
I am trying to use packery but i need to let user put the tile wherever he wants.
1. Is it possible with packery 2? (i dont think so - it always pull up or left - layout, or shiftLayout)
2. I almost got it working with packery 1 (test case below) where I stamp an item after dragging it, so it can be even in bottom right corner. The problem is, that stamping an item, lets user to put another item in the same place. Is there a workaround for that, so user should not be able to stack another items on stamped tiles?

Test case: https://codepen.io/Kedor/pen/qBqPPjq


Start with the linked CodePen test case and compare the Packery 1 and Packery 2 behavior described in the issue. Read the relevant layout, dragging, and stamping entry points to determine whether user-positioned gaps and non-overlapping stamped items are supported. Done means a confirmed implementation path or a clearly documented limitation and workaround.

Written by the indexing model from the issue text.