[Matplotlib-users] Problem saving open symbols in PDF

Hello,

I see that a few days old clone of mpl, cannot save open symbols correctly
in a pdf file.

Here is a simple test case (in ipython --pylab):

I6 xx = np.random.random(1000)

I7 plt.plot(xx, 'D', mfc='none')

On screen open symbols are fine, as expected transparency works fine,
however when saved in pdf transparency disappears, symbols cover each
other. (Saving to png is also fine)

Could you confirm if this is a case in another installation?

Thanks.

-- 
Gökhan