I would appreciate an explanation why 2nd-level sub-categories when customizing reports are repeated and nested since QWin R67.7? What is the benefit for such behavior?
The image below describes it best where you see three in R66.28 vs five in R67.7. You need to have a 2nd-level sub-category to see this. e.g.
Auto & Transport
> Auto Payment
> > Interest
> > Principal