I have the same issue around runways as well....can provide screenies if need be
Yes, it's expected you have this issue and the reason for it has been explained above.
As with everything else related to the FS9 version, use the Trial to verify before purchase if the scenery looks acceptable to you. The Trial doesn't expire and can be launched an unlimited number of times, you just can't run for more than 6 minutes straight, but otherwise you have all the means to check each and every spot of the airport before purchasing.