Hello,

This seems to be caused by chunks that aren't generated yet while the surface is being populated with trees. Once a tree is placed on the edge of the world the parts that are placed on non-generated chunks are being cut off.

I currently don't know how to solve this issue. Possibly by storing the blocks that are generated 'outside' the world, an place them once the chunks are generated. But I don't know if this is a perfect solution.

What do you think about this?

Tim Visée

You can force the generation of a chunk where is a part of a tree.

That's true, but that could create an infinite chunk generation loop when you increase the tree density. Also, force-generating a chunk while another chunk is populating could break the generation process.

So in short, this should be solved differently.

Tim Visée