Sorry if this isn't new. I was just watching a stream of Tooie and saw a glitch I had never seen before. Some quick searching didn't turn up anything. She was doing the quality control jiggy in Grunty Industries. When she hit the last barrel the jiggy landed on the side with the minjo.

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Sorry if this is a recurring question but I'm confused as to why puzzle pieces don't have to be collected in 100%. They're tracked in the game or is it something weird like the game itself doesn't count them towards percentage?