I have submitted this as a bug report but wondered if anyone else has had this occur on the same hole.
I was on the fringe to the left of the 6th hole (rear pin position) , 13ft away, 4inches downhill - i hit what i would think a perfect putt (well i'll never know if the line was right ) and it moved just 5 inches, i did the same again, another 5 inches. As this was in a premium multi-round tournament, you can imagine i wasn't too pleased.
I've been playing this game a couple of years and i can't recall this happening from the fringe before, i've had putts come way short as the fringe was quite wide, but not putts that barely move - to me it reacted like i was trying to putt from the rough.