I don't know if this has anything to do with updates to the game, but for the last week or so, airport markers don't show up until I'm right on top of the airport. Like, I was trying to land at a little dirt strip and the marker didn't even show until I was literally flying right over the runway. I don't remember having this behaviour in the game a couple of weeks ago. Is anyone else having this problem? 

I have noticed the same.