I have a new 955 (ver 19.18) that has been working fine for a week. Today I started a bike activity and it continually vibrated and showed a screen with a little clock at the top and a display of 0.00 (like a timer screen, perhaps). All I could do was stop the activity as it was unusable. I could stop the vibration by turning off the system vibrate mode but the display was still the same. The same happened with a run activity though a pool swim open water swim or walk was fine. I've restarted the watch several times and no change. All notifications and alerts that I can find are off and it has worked successfully several days ago. Any help? Thanks.