Why does the code editor add indents between lines?

Question

phpstorm

I work in PHPStorm and in WinSCP.
When I open a file from a server, indents between lines are added in my file.
I thought the problem was in the server, but I had this problem on several different servers.
I also tried to open the file in Sublime 3 and the same nonsense happens there.
Prompt at least in what direction to dig?