Originally Posted by
Cyclesafe
Welcome to the wild wacky world of triple front derailleurs! Get yourself a jump stop so you will never again experience a suicide shift to your bottom bracket.
http://www.gvtc.com/~ngear/whatis.html
yup somewhat common to see this on dura ace or ultegra triples. to get a good shift to the small ring the inner plate doesn't guide the chain to the ring. i some times angle the tail of the fd outward a little to see if it helps from dropping the chain.