Roofit - multiple fit different datasets using different PDFs with some shared parameters - ROOT version issue

Roofit and RooStats
2

Dear @andrea.celentano,

Thanks for reaching out to the forum!

Let’s ask for the help of @jonas , it’s possible some change indeed changed a previous behaviour. For convenience, I link to your comment from the other post where you uploaded the reproducer Roofit - multiple fit different datasets using different PDFs with some shared parameters - #6 by andrea.celentano .

Cheers,
Vincenzo