The dev is looking for feedback: https://github.com/BirdSentinel/rvgl-for-switch/issues/6
It's described as a binary patch, you could ask for more details of the changes thoWhere is the source code?

Oh, just realised it's a 2 year old port with no source code published anywhere, where someone unrelated to the project tried to fix it with binary patching... how ironic.It's described as a binary patch, you could ask for more details of the changes tho
Same setup as yours@Taffer
Same.
The main menu of the game starts fine, but can't load any tracks, too, crashes anytime. 0 custom tracks were loaded, just the standard rvgl_full_win64_original.zip gamedata.
FW 21.2.0, AMS 1.10.2, full Title mode.