Look up the region on Bing Maps and zoom in to see what it looks like. It’s possible that the area you’re referring to is a very low res satellite image and the AI doesn’t know how to render it properly.
I saw that issue in a small mining town in northern Canada. The town should be surrounded by thick boreal forest, but in game, only half the town is modelled and the other half and the area around are barren tundra with the odd single tree. Turns out that it’s due to a strip of very low res satellite imagery in the Bing Maps data for the entire eastern half of the town.