query in report, info panel only consider product in first level of category

make category lv1.
make category lv2. Parent Product Category of lv2 is lv1.
make product p1, set Product Category is lv2

+ in product window, seach product by lv1. result has p1
+ at product info search by category lv1. in result don't show p1.
+ at a report has parameter is product category, select lv1 in result hasn't p1.

maybe in report parameter add a checkbox include sub child.
in product info, must show p1.