[astvitaliy1982]

The problem has been fixed) These are different pixels in neighboring squares.
I figured out why they were there.
Let's say we are building a new lake on a piece of land that consists of three horizontal squares 1,2,3.

It is in this sequence that they should be inserted into the game. If you put them 1, 3 and then 2, then squares 1 and 3
copy into their data a section of square 2, which at that moment is still land. And because of this appears
this error.


In my case, I put 1 and 3 squares because 2 was not ready yet. Now it's fixed)

A classic mistake with a classic solution... I'm going to hang myself...)))