First - I tried to find appropriate forum in order to post this thread in there.
I also checked the help center with the FAQ, but this thing was not listed in there too.
If this is not the right place, please provide me the link to the right forum here, where I can do that. In all the ways my apology if the solution or reasons are obvious, but I'm not able to see it.

I do remember that it was possible for me to sort the files I was submitting into separate folders. It was enough to hover the mouse on the top right corner of the thumbnail and a small icon of a pencil was indicating that I am able to move the file into one of the already created folders.

Now that option is gone - for months. 
 My question is : Do I need to become a core so I should get to sort my newest deviation in folders again as before, or there's another way for me to do that with menus or it's an issue to anyone .

Thanks in advance.