On SA #2 (multiplayer), my entire Menu (including the player's scores, and all the buttons) disappeared. Only the chat box remained.
Then, when a playing partner's close shot to the cup's "instant replay" finished (incidentally, as I was submitting the "Menu bug"), the game window went WHITE, and I couldn't continue the round.
Just before the round, I had already cleared both my flash cache and temp files. I asked (before the problems, on the first tee) if the others had cleared their caches, and they all hadn't. When my menu went buh-byes... their's didn't.
Submitted bug reports (in game) for both glitches.