Tell me more please. What happened, how does it happen, which game mode(s)?
AS and it started last night after the update that fixed the secure page toolbar. I suspect it's affecting all modes of multiplay but I can only speak to AS.
It starts with the clock running down to zero and nothing happens. If you're hitting, nothing will happen after you hit the shot-the golfer poses in the backswing and freezes. If you're not hitting, the clock just runs out but you don't see a warning-the game just stops. Chat still works.
Then comes the "somebody disconnected" message and you are back in the lobby, minus the player that disconnects. They don't come back and this is where you see the bug that hasn't been around for a long time.
If you're the one that disconnected you restart the browser, get the "Continue/forfeit" screen and when you click continue nothing happens. You can click Forfeit and it does what you'd expect. You can restart the browser and go through it again and all that changes is the game timer that you see on the Continue screen-it registers the smaller time that you just know the guys in the lobby waiting for you are looking at.
Basically, you get stuck in limbo with only forfeiting the match as a choice.