I was running this morning on the Run activity, I had music playing as well Incase it matters. I went to switch to a Trail Run and the watch reset. I decided to just keep running on Run. I found it odd that music would no longer open on the hard press of down. Also backing out to watch face and scrolling down would cause it to reset.
After the run when I went to save and it reset. I went to discard, it reset. I tried multiple times, same outcome, every time. It would always restart with the run paused. I thought maybe I could plug it in and delete the activity, but usb mode would not allow me to open the watch at all. I would have also tried to backup all the data on the watch. When I disconnected usb it would be stuck on the usb screen. Leaving it on resume later would restart if I scrolled down from the watch face.
So I decided to hard reset, lost all my data and the run. I really wish that the hrv status, training readiness, etc would load from Garmin connect. It seems like the data is all there and could be synced...