There are a few other limitations in the demo such as Run From Here wont work,
I've always wondered why I could never get Run From Here to do anything, but never made the connection.
I guess if I actually finished building a machine and had a reason to get a license, I may have made the connection. The Wiki used to list the features that didn't work in the demo, but I don't recall seeing RFH on that list, and the list was removed a long time ago. Or maybe just moved to somewhere else.