It is default position in v12 because i haven't found any options to change it in v13, and now in v13 desktop folders stuck at the top of the tree... which is weird, but okay if you have 5-10 folders on your desktop, but it's not okay if you have way more, like me (i have 43 right now, all most of them are symlinks).
Currently it is only possible to move "desktop" at the root of the tree and that looks and works terrible.
Please, can you add some option to show desktop folders like in v12, at the bottom?