Wrong and broken tile in world composition

Hey guys!

i have a problem with world composition. I was going to split a landscape in tiles. It’s fine! Now I was trying to move over existing foliage to the specific tiles. Also this was working well. But now I saved and reloaded the project and I get some error with one tile. It’s pretty big and not in the order anymore. Also the foliage is far away out in nowhere.

Its the second time that this tile is having issues. I started already two times.

You guys have any idea what is causing this issue and how to fix? I added 3 pictures.

First one is all tiles are unloaded. You can see already something is wrong

Second one you can see after loading at the bottom right corner how big the tile is. It’s broken.

Third one the Foliage on that tile somewhere in the are.