item 1 at elevation 138 and height 10
item 2 at elevation 100 and height 500

In 3d view its 100%
In 2d view item 1 appears over item 2, even though item 2 is MUCH TALLER than item 1.

Seems that Sweet Home does not take the height of an item into account at all on the 2d, only the elevation, which is a DISASTER and sadly makes it unusable as a real design product