!!! SHIT !!!!
I was planefagging the day before yesterday and saw an aircraft's altitude as 'on the ground' even though it was still flying….over the water.
It was a trainer aircraft. I know the area and the trainer was not near any airport/landing strip. A couple of minutes later, the altitude came back on, but I prayed in the meantime that nothing had actually happened to the pilot/plane…
Pray.