I've set up a HM training plan in garmin coach and yesterday's workout was a 6.4km run.
I selected the workout scheduled for that day on the watch, pressed "Do workout" and just before starting, it popped the syncing message on the display. The workout told me to start my cool down on about half the initial distance (I finished the scheduled distance anyway). When I opened the garmin coach on the iOS app, it was showing two workouts for the day: the workout I completed and another 6.4km run. I think that the sync messed something up and started the wrong workout.
Has anyone encountered a similar issue?