Items counts are not calculated correctly for category

[ady1981]

Items counts are not calculated correctly for category.
If an item presents in several subcategories, it will be calculated several times (the same item will be counted in each category).

It looks like a bug.

Regards,
-Andrey

[trevor]

It has been designed this way because otherwise it looks very strange that the total of the parent category doesn't equal the sum of the subcategory totals.