Creating infinite subdirectories when folder is pasted in itself

[zaevimn]

I'm new to neo-tree, been using neovim for over a month now. I was practicing it and yanked (y) a folder and paste inside itself and it gave weird error, when i looked folder structure i had infinite nested same folders. it created copies inside itself, and stopped at some point too (not really infinite). It created copies and each sub directory (and it's content) is taking up space in memory.

I'm using arch linux, kernel linux-lts.

[zaevimn]

I think it shouldn't allow destination to be inside source, file system like nautilus doesn't allow it.
Or it can first create a copy of folder somewhere else as temp than copy that temp in it. It'll be reading from temp folder and won't get into paradox of finding it's copy in itself while reading to copy.