Airport elements not drawing

Hello, my question is that, despite are inside the airport radius, can’t draw painted lines or aprons. Tere aren’t any airfield near. the coordinates are: lat 40.911905 / long -111.587636 (Utah, East Canyon State Park). The airfield is 15UT and the radius 20 Km. To the north, can reach the limit without problem. What could happen? Any idea?
Thanks in advance.