Closing the settings window will immediately flush a temporary 0, 0 value it writes for the size which gets overwritten by the MainWindow a few seconds later.
In the code, -1 is considered the "off" state, and 0 is considered a "it should be saved, but only whenever the value is available". The save gamepad size/pos option already worked like this new behavior, since you might enable the option but not (previously) have it open yet. When encountering a 0 as the size, it'll just use the default window size of Cemu.
