Hey guys,
A bug has appeared in the project with 4.14. The issue is that sometimes lod0 becomes black on landscapes using world composition. Iโm currently working to fix the bug by converting the landscapes from tiled worlds to single landscapes. Now that the tessellation cost bug is fixed in 4.14 having a single large landscape is no longer an issue. I have notified Epic and weโre going to release this new version of the project instead of the tiled one. The good news is Updates #1 and #2 will be released day 1 as well. So, 7 landscapes instead of 5. 
If you have any questions feel free to ask.