Yeah, this has happened to me at least 3x that I can think of, all during showdowns and all on the 7th hole of the round, twice on the elimination round and once on the qualifying round. The only thing I have found that can be done is to contact them ASAP; at the very least, they are good about refunding the entry fee, but I was in the hunt in both those elimination rounds and three false bogeys took me completely out of it both times. It is a very, very frustrating glitch.