I have to be on the latest patch, otherwise the Mushroom Skewer wouldn't be working right, but this happened again:
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Kept failing at the last available dungeon's midboss, decided to leave to see if there's anything I have left to gather.
Fogbound Stair's ending cutscene isn't turned off, for this save? The "Phew, we're at the end", cutscene.
https://drive.google.com/file/d/1Gkh3jRjDbsl-pogPxt_PLdSkXdvhQwCn/view?usp=shari...
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And not to forget the Fionain-less Fairy Ring in the grove that's south of the Challenge Tower.