When trying to press 'up' or 'down' to navigate some menu or otherwise(no menus open). The vertical position cursor graphic is flipped across the middle of the screen.

I've had this issue for... a long time, was always a bit confused by it, but only today I noticed that the cursor was correctly finding the subsequent buttons when navigating up and down(since the buttons become highlighted when moused-over), but it's just the position of the cursor is flipped across the middle.

Someone probably forgot how the coordinates work in Java.

Maybe this is just a problem I've had? It's been there for forever. When I played on my Linux before, or my Mac now...