Vim removes automatically inserted spaces. How to disable?

Question

vim

When I write code, vim automatically adds spaces:

some function definition {
        |
}

But if I move the line and return to the previous one, then there will be no space:

some function definition {
|

}

I had this in almost all editors and ide, but there I found how to turn it off, but I couldn’t find it here. So how does it turn off?
UPD: Turns out I already asked this question a few months ago lol.