I hate to say "GREAT", but that confirms it's not just me. I sent a report to Tormach and got a reply from Rob Ellenburg. He suggested (as soofle616 did) checking the display current tool path (it isn't checked), switching to a different view (i.e. ISO, top, front, etc.) which didn't help either. Also, disabling/enabling the 4th axis display.
I sent him a reply with a conversational profiling routine that doesn't display on my Hub, but works fine on my 1100S3 running 2.7.1. I'll post here what he finds.
On the plus side, I put a 125,000 BTU heater in my shop which heats if from 40 F to 55 F in about 15 minutes. I'd prefer to do the debugging with a tool path displayed in our house on the HUB, but it's very comfortable to sit at the mill nowadays.
Bruce