There is this guy on Miiverse named Yusof who's copy is very glitchy (It's not this copy, that's T-MAN), he commented on one of my posts about a glitch I found. He said:
02/06/2015: "Yeah I am not surprised because I found 17 plus glitches in this game in the first 5 weeks of playing it when I first got it on October 3, 2014!"
I commented on the same day: "That's the 3DS version. This is the Wii U version released 11/21/14."
He replied also on the same day: "I experienced more glitches on the Wii U version. The game is sooo glitchy! Either that or my console just defected(Probably!) But, the 3ds is not the same case!"
I finished it the day after by saying: "You may have a messed up copy. Call Nintendo to see if they can solve this problem."
He hasn't replied yet. The things in quotes are what was EXACTLY said, so typos were made on purpose.
I just checked his profile and he appears to be half normal and half Nintendo hater. He has not uploaded any Smash screenshots yet, though.