Bit of a puzzle.
Simple example on a 10m x 10m space.
Split the area in half using zoning and as expected in the zoning list it shows 50sqm of each area.
If I add a third area inside one of these halves, for some reason it doubles the area size in the zoning list for the outer area???
The grey areas at the top of the second image show the area measurements using Rhino (not lands)
As you can see, the total area when adding up the totals in the zoning list comes to more than the total size of the area.