I have a Vivoactive 4 that I wear for daily use and walking and a Fenix 6s pro which I use for running and cycling etc. When I do a run using my Fenix it does not increase the number of stairs climbed but it does increase the number of stairs descended. So tonight's run which had nearly 200 feet of climb has left my Vivoactive showing 35 stairs climbed but 51 stairs descended. The same thing happened last week. But not on one other run that I did the other day.
