Today I went for a run and when I was on the last Km I noticed the pace (instant pace) was stuck at 0.00 while running. Distance was updated as expected, duration was updated, heart rate, everything except pace. I paused, resumed and that made it work for a few seconds and then get stuck again at 0.00. I did some strides at the end of the run and of course the anaerobic score doesn't reflect any of that, In the web I can see the pace graph dropping to zero at these points but if I move the mouse over this graph I can see my position being correctly registered in the map, even in the segments where the recorded pace was zero, and not stuck at one point as one would expect if you move at 0 Min / Km. I was using the Garmin HRM-600 as well.
I did a soft-reset on the watch and I will see if it happens again.
