Yesterday my wife started a group workout. all went well for the first 10-20 seconds. Then although the power she was outputting was as required she stopped moving. Then started moving forward erratically with speed changing rapidly between 20-30 km/h within a second or so. This continued for the full 67 minutes of the workout.
She was not alone. They where a group of 4 with exactly the same behaviour and they stayed together for the whole workout. The rest of the group kept on moving up the road further and further away until out of sight.
Have others experienced this too? Or does this need to be reported as a new issue?