Real Cursor Strays From Visible Cursor

[WaffleGuy]

In this video, as I move my window upwards, it seems that the marked dirt blocks seem to stray upwards from where the cursor actually is. It isn't gamebreaking or anything, just wanted to point it out.

Edit: After some more looking into it, it seems to me that this is because the movement keys also move the selected tile around, I think, something to do with that, because this happens when your cursor is at the very top of the screen and you move the screen down.