I had a project working okay with the previous surface creation option but with the new one I appear to have two issues.
1: when I import a .csv file with x,y,elevation as points, create a surface, link the surface to the points. Everything appears fine I now have a point cloud and a surface. But if I save that file with no other changes I cannot re-open it. I'm running the trails WB from git today and Freecad 0.19 23463. I've tried the same on windows and linux (same FreeCAD version) with the same result. The wait cursor just never goes away on opening the file. I was unable to open the surface file from my previous versions because i had imported the points, created the surface, then deleted the points - but it seems that workflow is no longer viable and files created that way will be broken right? All okay, just confirming.
2: the "New Surface Creation method" makes it so that I cannot link a surface to another file. Is this intentional or am I using surfaces wrong? Previously I could create a surface in a file intended to contain only topographical elements and then link that surface into a different file which merged in other objects (buildings, fences, etc.).
Now I cannot link a surface from a file into another file without it complaining about no linked points - even if I link both the surface and the points from one file to another.