Sorry about the picture being taken at night, I only thought about it at that time. I'm sure it would be more evident during daylight.
What I mean is along the right and bottom edges of the window, there are black strips which seem to only display the claim boundaries and the top tab of the collapsed inventory (you can tell more where the wheat field is). I assume the window is supposed to be cropped along the edge of the actual game area, and that those extra elements are just not limited to where they would not display if the window continued indefinitely.
It's not really anything major, and I only notice it when I'm near several claims, but I thought you should know regardless.
I'm using 64-bit Vista SP1, and have both the x64 and x84 Java 6.14 installed.