Hi,
I have Fenix 5 with latest software. I use the watch for apnea training and what i noticed that sometimes my distance gets reset to 0. For example i perform a couple of regular swims (100-300m). Then I do apnea training. Afterwards I do another set of high intensity swims (500m+). Sometimes at some point during the activity my distance gets reset to 0 and starts recording from 0 and when i finish, the distance is for example 50m, however I am 100% i did at least 500m. When looking at the activity details I noticed 700 strokes, which is probably more than 50m. Has anyone experienced anything similar? I have also set up lock during an activity so I don't press anything by mistake.