Is the leak coming out the hole in the bleeder valve or around the threads? If the latter, it could be residual fluid which is left in the space at the bottom of the bleeder. If the lever (pedal) has a solid feel and the brakes work properly then the valve is sealing properly, but after bleeding some fluid will remain in the small space at the bottom of the valve, and will tend to seep up around the threads. I had this issue recently and thought there was a warranty issue with the calipers. The dealer checked it out, with input from the factory, and came to the above conclusion. (I suppose if you use a vacuum tool to bleed this will not happen, as the residual fluid will be drawn out. When checking, keep in mind the spec for the bleeder screws is 4.5 lb.ft, so be careful of over tightening.
I don't want a pickle, I just want to ride my motorsickle. A. Guthrie.