What bites is, the coins show up right away because they are on the active window. The decision is made the second you hit apply. So you get to see a wall of coin shots knowing full well you didn't get them.
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Well, there usd to be a bug which could, theoretically, give you endless coins.
No, I'm not going to give out info on that bug even after it was fixed because someone may figure out who to exploit it another way. :p