Hello,
I've already reported it as a bug but I'd like to ask you if you have the same issue also on your (local..?) maps with the latest beta 21.09 where there are missing black border around roads (see the picture) and in some areas (fields, meadows with light background etc.) the road is almost invisible. Tha same map in other devices, in Mapsource and in Basecamp everythig is fine. For comparison see my friend's Edge 530 vs my 840. In watches (FR 955 also everything's fine). I've bought edge last week and I like beta program so I've installed this beta firmware and I don't know how the situation was in previous fw releases.
Thanks,
Pavel