I can also confirm the bug is still around. Tried it with both the Asobo Deluxe and FSDT KORD versions. As others have noted, this appears to be due to LOD issues with the terrain meshes. If I leave the drone cam around for a moment, the entire length of the runway will be smooth. If I move the drone cam away to reduce the LOD and then quickly fly back over the runway, the tears come back.
These tears are not specific to runways either. It’s hard to see these tears with things like trees and grass in the way, so I found a rural road and flew the drone cam over at high speeds. The very same tears were present there too.