difficult and stupidly random
Pres, FDS seems to be behaving just the same as US version. It's the same scenario Fiskbit corrected me on earlier. You entered the VOD encounter by accident which sets the scrolling flag to "right" (even tho no actual scrolling happened), and then right after it you hit a large enemy on a path square (which changes the potion's collected flag based on the last value of the scrolling flag). FWIW, I dont think it matters which way you exit that large-enemy-on-path encounter, since it won't affect the scrolling flag.
edit: lol VOB. Thanks a lot, smw.
edit: lol VOB. Thanks a lot, smw.