Okay I just tested it, and that addon not only doesn't resize the Pet Battle UI, it makes everything look like it's straight of a Nintendo GameBoy Pokemon game. When I hit Escape to pull up the main menu in the game, it pops up with another window off to the side for this addon. When I enter a Pet Battle, the entire UI has changed to look like an old school Pokemon game (completely with little dinging noises when mousing over options), but it takes up the exact same amount of space as the standard UI. There's a couple smaller windows that can be moved, but the main window is still locked in place.
I appreciate the assistance, but that's definitely not what I want.
