I just installed and started using SW 2016. I want to create a cylindrical mate between this hub and shaft. But the system says it can't be done. It says they are separated by so many millimeters, but I can easily drag one part to the other so that they appear concentric. There are no conflicting constraints -- SW will allow me to make the surfaces parallel, which they were anyway before I opened them in 2016.
What is this BS? I can't use 2016 if it won't do such a simple operation.