Inconsistent bin numbers when using DropBins and SeparateGammas

TRExFitter Version and Commit Hash

TRExFitter version: TRExFitter v4.26-dev

Commit Hash: 748eacf8

Description

When using DropBins: 4 and SeparateGammas: TRUE, an error is printed in the h step:

=== INFO::TRExFit::WriteHistos: Writing histograms to file VBSNeutrinos-ASIMOV-l1pt_CRWZMjj500/Histograms/VBSNeutrinos-ASIMOV-l1pt_CRWZMjj500_histos.root ...
=== DEBUG::SampleHist::WriteToFile: adding separate gammas as SHAPE systematic stat_HeavyN_mN1TeV
Error in <TH1D::Add>: Attempt to add histograms with different number of bins : nbins h1 = 3 , nbins h2 =  4
Error in <TH1D::Divide>: Cannot divide histograms with different number of bins

It goes away when removing either of the options mentioned above.

Reproducer Configuration

I have attached a minimal reproducer, just run trex-fitter h mwe.cfg. mwe.tar.gz

Ideas to Resolve

None, sorry 😞