Wouldn't it be nice if you had the option to determine the maximum width or perhaps maximum amount of children allowed in each row of a stack-group? This way, you can, for example, create a complete visual calendar with one stack-group.
If you were to do that now, you'd have to create a vertical stack-group with 6 horizontal stack-groups, and you'd have to make some pretty complicated calculations to know what numbers go inside the cells and which items to hide or not.
In the images, the dark numbers represent hidden cells
Currently:
With wrapping:
I recommend trying to create this example in the current situation