After all of this time and untold number of requests and complaint and a new train wreck version 4.1 Simplify3D still has not address the elephant in the room.
The slicer still does not build an extrusion for the edges of solid layers to attach to especially when over a sparse infill.
Why this has not been fixed long ago is mind boggling since other slicers have seemed to be ably to handle it just fine.
There really is no excuse for this to still be an issue other than they simply do not care.