I wonder if this was a part of the adjustments to Pac-Man if other stuff hasn't been found for him or specifically for him like how people interact with him.
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Someone who can read and actually translate Japanese would be better at explaining what's happening. Google Translate gives me this: "I found a good bug in Kusso. At the same time as Pac-Man begins to advance at the side b, effects are supposed to follow the side b at all times by cutting the food at the same time. I used it again and it went back. It looks like F91 and it's cool". Essentially, it's a visual bug.
ROB wasn't listed nor were the Marthlings, but this could fall under general gameplay changes that could have been fixed. Hopefully, because this is really weird and kind of dumb.
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