Happened 3 times so far, during an activity that the watch bugs.
Screen won't turn on with wrist movement anymore and the data won't register correctly.
One of the 3 times I had to long hold the upper button because it completly froze after this happened, the last time was during a 16km running event very unfortunate moment for the watch to mess up the data. But thankfully the GPS and timer kept working, heartrate, ground contact, vertical association, cadans all frozen from that point.
Screenshot show the issue.
