I've noticed theres alot of problems with subregions and I'm sure this has come up before, but here goes.
I added a subregion, a simple half circle, to my toposurface and everything was going great until I went to the 3D view. My subregion has cut my toposurface and elevated itself above the topo, leaving a hugh hole. If I delete the subregion, the topo goes back to normal.
Would the view level or different views affect the height when in sketch mode?
I would assume not.