Alpha sheets can now be added to games via the edit option in the alpha sheet display. In addition, statblock embedding should also work for the [sb=show][/sb] tags. Any problems, please post in experimental features with links to the sheet and the game.
I have heard of that happening, the player swearing up and down they did not make a mistake with Preview. Never had it happen to myself though. I use Firefox and often if will recover pages in history and you can copy the text afterwards.