Check out a previous post by "The Walker" outlining how to reset and restore your watch.  Many, including myself, have restored their watches and now everything works perfectly.   ... View more

Thanks to TheWalker.....   I've run the procedure and have done a few workouts and I haven't had any problems.  The timer function previously also used to stop and now it operates like it should.  I have left the settings in Samsung Health at their defaults.     Thanks again, you helped get my "old watch" back. ... View more

I have the same problem... which appeared in the last few months after the last update in Dec  2019.  I also find the countdown timer stops on it's own before completing the time set. ... View more