Yes, there does seem to be an archaic Finder bug. I resorted to using an Apple mouse as it gives less trouble than any Logitech device.
But Finder still has a bug/s. When I sometimes drag a file from a Finder window onto the desktop, the file 'disappears'. It's not on the desktop, nor in the original Finder window. This happened a few times before I realised that the item being moved was dropped onto the desktop background, but not in the position were it was dropped, but instead in the very top lefthand position of the desktop (with two-thirds of the file obscured – off the edge of the visible screen – the position where you would find the mouse arrow upon start-up of the Mac).
There is another bug in Finder that is even older. Sometimes, when the Finder is first opened, it does not remember its last position on the desktop screen, and Finder is positioned a few inches away from where it was last located on the desktop and where it was last used before being 'Shut Down'. At other times the main 'Home' Finder window doesn't remember that it should be displayed as 'Icons', but instead, the Home screen is shown as a 'List'. I have noticed this bug goes back to previous versions of the operating system (I am presently using OSX 10.7.5) and on two different Mac computers. Ghost in the machine, perhaps? 😮