From: McMinnville, OR
This is happening to me as well, playing elmer (2015-Eur and Afr)....
I noticed today that if I've punched up the 'C' button, everything looks fine. Further that the anomaly only occurs in a peak hex that has nothing else (rivers, roads, etc) in it.
Like you, I'm living in hope, tho I expect that the news will tell if investigated carefully, eh?
"I have the brain of a Genius, and the heart of a Little Child. I keep them in a jar under my bed!"