I'm making a custom world for my server with worldpainter and everything works fine when exporting as 1.11. However, every time I start the server with the new world it has to convert the map even though it was exported through the current version of minecraft that the server runs off of. So it converts and when it's finished and I join the server it looks like... this:
I don't believe the problem is with a plugin because this happens in single player as well. But do you see the issue? The map is properly butchered and I have not found someone with this same problem.
Here is the world I've been working on:
(note, it happens to every world I load with WP, not just this one)