The ground in the editor CK and in the game do not correspond to each other

[TheXXI]

I have created a new world.

I probably accidentally did something to the ground when editing. In the game, the ground is not displayed in several places, but below the level I need, separate squares of ground hang at different heights. In the editor, all the "problematic" land is in its place. How do I fix the position of the ground in the game?

Screenshots from the game:

Screenshot from CK:

 

Edited Saturday at 12:48 PM by TheXXI

[TheXXI]

If anyone has a similar problem, the solution is here: Reddit