Fiddle ult bigger than his ult model
's ult hit radius is a few pixels bigger than the actual model for it. My wife and I noticed it several times in multiple games both against him and playing him.
To recreate: Choose fiddle against anyone, level him up to 16 (or just give him the 3 points in his ult to make sure you do it like we saw it) and use his ult on someone. Walk them from the outside of the ult in and watch yourself take damage before you enter his physical "circle" of damage.