Starting with the following belt placement:

Attempting to super force build a roboport in any of four possible locations covering the 3x3 square where all the belts "intersect" both
(1) shows a false preview of what the end result will be and
(2) fails to maintain the belt connections with proper placement of underground belts on either side of the roboport
What I was expecting was something like this:

What I actually got was different based on where the roboport was placed:
(SFB preview on left, result after placement on right)



