Plot of sWeighted data has unexpected "renormalisation" in variable width binnings

Roofit and RooStats
1

Dear experts,

I am plotting sWeighted data over a variable width binning, and when comparing the same data over two different binnings the unchanged bins have different entries (also the last bin should be the sum of the ones it replaced, not the average?). See plot below.
I use no options when plotting aside from the binnig
data_sig->plotOn(framemmm2, Binning(mybins));
It looks like the plot is being renormalized to some sort of integral?

Many thanks for any hint on what could be the problem.
cheers, Francesco

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2

Ciao Francesco,

I am adding in the loop @jonas , our RooFit expert.
Could you in the mean time share the version of ROOT with which this behaviour was spotted?

Cheers,
Danilo

3

Ciao Danilo,

I am using Root v6.30/08 directly on lxplus.

cheers, Francesco