[BUG] Stock Asobo Asset Gen_Hangar179 sky visible through roof

The stock asset from Asobo Gen_Hangar179 is in the asobo-modellib-airport-
generic library and you can see through the roof into the sky. The roof from
above is correct but this is causing it to not look good in a scenery where I
would like to make use of this default asset.

Hello @thetford569 Thank you for reporting the problem. The information was
forwarded to our artists. Regards, Sylvain