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Same results here, and I'm not running any of the things you mentioned; also been to many of those sites, within the past few days in many cases. I'm basically on stock Chrome (though I do have Adblock).

Same for me. I then opened facebook in a tab, reran it and it said I had visited every site except facebook.

Safari with adblock and ghostery here, got 8 correct and 18 false positives.