I was out running last week with my "I refuse to spend money" rig, it ripped, and my sensor fell off of my shoe. Anyway, everything kept going like nothing had happened. The reciever had no signal, but the music kept playing and there was no announcement. The only indication was that I when I grew concerned that I was running the slowest and longest final 100 meters of my life, and get the report that my current pace was 0'0". I looked and saw the sensor was gone. I hadn't gone very far, turned around and went back to get the sensor. I was lucky, as I walk back to work after my run and wouldn't have noticed the problem until the next day.
I guess I'm just wondering if anybody knows if that was normal. I thought that the system would tell me that the workout was paused or to connect a sensor or something. I suppose I'm just upset because instead of the best pace I was on pace for thanks to perfect running weather, I ended up with a 58' mile pace that threw everything off.