Henry-Unfortunately what you see is not a bug, just an aggravating nuance of the game. If you watch closely the ball jerks ever so slightly as it hits the hole then turns right-your basic lip out. Given the mapping tolerances of the game (+ or - 1/2 inch according to WGTNiv) the picture doesn't line up with the path of the ball. I suspect when you made the putt you saw a lip out. Then looking at the replay where the tracer shows up it looks like the ball rolled right over the hole.
You wouldn't think this is right but there have been a lot of complaints about this very thing in the past few weeks, ever since WGT started messing with the green speeds again. Sorry. Heh-I can't tell you how many times it's happened to me. :-)