Bug: if you maximize the game window by dragging it to the top / double clicking the title bar / clicking on the "maximize" button between the minimize and close ones in the upper right corner, the game will have the bottom and top part of the screen cut off.
The game will still render in full screen despite the window being smaller.

And a feature request: would it be possible to make the game read controller input, when the window is not active? Since the game involves quite a lot of grinding, I tend to do other things during it, and it would be very helpful if I didn't need to go back to the game window to control it. PS2 and PSP emulators actually have this as a feature...

Another feature request:
A quickload / quicksave function would be also very useful, especially for the item world, where later on you need to use tons of Gencys to fully level items. Normally you gency out before the floor you need to focus on (dark court, every 10th floor for fights, every 3rd floor for mystery rooms, etc), save the game, go back in, go to the next floor, and if the map setup is bad you quit and load your save. This takes up an extremely long time, so it would be very useful if you could make quicksaves at any part of the game, or at least right before entering the item world.