Hi Stephan,
yes I thought about it too, thanks! I will see what I can do. I may then come back here 
Just a second question, looking again at the reported bugs, especially the comment of Peter here RooFFTConvPdf of RooAddPdf gives incorrect coefficient value. He said that summing the pdfs then doing the convolution will give wrong coefficients, but if each pdf is convoluted then summed, this won’t produce wrong coefficients. So my question is, if the second way is used, then I would expect consistent results in all versions, right? or was the problem of wrong coefficients in both ways, because setBins can be used in both, and you said changing the bins would change the coefficients? thanks