In UE4 Engine in Viewport
http://www.bilder-upload.eu/thumb/4cbeac-1483352281.png
http://www.bilder-upload.eu/thumb/cfe957-1483352343.png
After Cooking as Standalone
http://www.bilder-upload.eu/thumb/ca54d7-1483352144.png
http://www.bilder-upload.eu/thumb/58c411-1483352214.png
Why?
Jörg