is there any way to make Gridster.js tile(s) stick, that is not move up vertically to fill empty space. Kind of like the way a layout program with snap-to-grid turned on works..
My answer is not directly linked to gridster but to one of its fork : gridstack. I post this answer as I found this topic while searching for this functionality in gridstack.
So in gridstack solution is to put this property in grid options :