It only fails in the remove material mode, not the create solid or surface creation mode. And yes, they are identical in several export formats.
Again, I need PTC to own up to this for the general population of users that expect this to work the 1st time and every time. I think that would be 99.99% of us.
How the code is written is of no concern to me... it just has to do this basic function.
Seriously David, are you defending PTC on this one?