internal resolution not displaying, spongebob squarepants the movie

[Douwe]

while playing spongebob squarepants the movie for gamecube, I noticed it displays the game in what seems to be standard resolution instead of the resolution is have set as internal resolution. enabling and disabling the widescreen hack while ingame fixes the problem until the next startup. also i've got a transparent box in the top left corner of the screen.

fix plz?