I got exactly the same thing yesterday. I played a round in the WGF tour with Kriztjan and we both finished the 9 holes and took screenshots of the scorecard and then when I clicked continue it said I had lost the match because I forfeited.
I don't care about the fact it said I lost because I did anyway but we weren't playing each other, we were playing with each other in the tour to verify our scores for the leaderboard.
But now I have a forfeit against my name in my stats.
What's with this WGT?