In my file, I use a category tree like:
main category 1
  subcategory 1.1
  subcategory 1.2
main category 2
  subcategory 2.1
  subcategory 2.2

When setting budgets for these categories, values get summed up in the category tree, e.g.
main category 1: 250
  subcategory 1.1: 100
  subcategory 1.2: 150
main category 2
  subcategory 2.1
  subcategory 2.2

When I use a report Budgeted vs. Actual, values do not get summed up in the tree, i.e. in my example I get:
main category 1: 0
  subcategory 1.1: 100
  subcategory 1.2: 150
main category 2
  subcategory 2.1
  subcategory 2.2
which seems to be not only inconsistent but rather wrong to me.