Discovered an obscure bug in Shadow the other day. During Khan multiball, I had two balls in play. One ball drained, and another went into the mode start saucer. At the exact same time, I tilted. Instead of kicking out the ball from the mode start saucer, it just started the next ball. Eventually it kicked it out (I think I started Shadow multiball), but until that point I was unable to start another mode because the saucer was occupied.