Inventories Sales Report not functioning on version 2.3.5

Dear all,

Upgrade from 2.2.20 to 2.3.5 and find out the Inventories sales report not functioning and also do test  on demo site and I think i found some bug here... I do direct invoice on demo site and go to http://demo.frontaccounting.eu/reporting/reports_main.php?Class=2 with no luck. May anyone verified this ?

The reports come out with blank reports only.

Thanks for your supports.