I noticed today that the "distance" and "pace" fields of the first data screen for "run" activity had randomly been replaced with "timer". I didn't notice until towards the end of the activity as I'd been following a workout set by the garmin coach where the first screen is replaced with a special screen related to the activity.
No idea how it happened. I wondered if it might have been accidental screen touches either during the activity or before, but I can't think of an obvious way to get to that setting with screen touches alone.
Has anyone else experienced anything similar?