Smart guide measurement labels display the diameter of polygon live shapes rather than their width/height, but still lists it as W/H in the label itself.

Steps:
1. Create a polygon with a square bounding box (like an octagon)
2. With smart guide measurement labels on, drag to a specific size.
3. Note discrepancy between the size listed when you release and the size in the transform panel.

Result: Label displays a different W/H figure than the transform panel.
Expected result: Either the measurement label explicitly informs the users that it displays diameter (i.e.: 'Dia: 100 px'), or it displays the bounding box width/height.

I'd imagine the latter is more sensible since a diameter for polygons is listed nowhere else that I am aware.