So I took a trip to the Bahamas in April and spite the wind that day, I hovered and allowed for the home point to be locked in, flew around a little, snapped some pics then landed.  With anticipation, I synced the flight record in the app and at last, the Bahamas flag was there!  Just recently I noticed that it had disappeared but the FR still shows the flight in Bahamas. After syncing again...it still doesn’t show.  I don’t know why, but it’s fun just having the flags.. Anyone else’s footprint flag just vanish one day?

No, all of mine are still present. Try reinstalling the app.