Same for me, hopefully solvable with a future update because it is very frustrating, especially during interval training where you want to look at your watch frequently while being under a high workload. Also, before the update, if you were at the homescreen there would be an activity indicator like a running person on the bottom of the screen, this guy is gone now. So it's the very annoying combination of going to the homescreen AND not being able to get back to the activity as easy as before making the watch worthless for some activities now. Maybe these are related in software because the activity needs to set a flag that it doesn't do now that keeps it active and turns on a return button on the homescreen. But that's an exercise for you. Would be very pleased to see a fix, because this is a deal-breaker for me for future use and recommendation to others of this watch or the Samsung ecosystem since my trust in proper testing is gone now.
For reference, I'm on Watch 5, non-pro, large variant paired to Galaxy A71
