Folders and files are overlapped by menu in Finder

I have a question regarding Finder, which may be a bug or simply me who doesn't know how to use it properly.

Anyways, here's the (potential) problem: when I am using Finder in split screen mode sometimes folders and files are overlapped by the upper menu.

Check this out:

As you can see in the image above, some folders are now 'under' the upper menu and I cannot seem to be able to get them back in 'visible' positions.

Can someone advise if this is a bug or it's just me being newbie?

Thanks 🙂

--- UPDATE

I am on MacOS 10.12.5 - the scroll bar is 'fully scrolled up' already.

I can't drag folders or files - when I release the mouse button, they simply stay in their original position.

The problem occurs in all folder view modes.