My layout "skyderby v1" aka "invaded skies" has annoyingly invinsible walls from objects that are below you.
Layout: https://www.lfs.net/forum/post/1885046#post1885046
Try the layout and test it.

Its the trees that causes the problem!
its need to be changed for the height
having the same problem very anoying

Trees still cause the hits in similar layouts like this