When "OverduesBlockRenewing" enabled and Item's (due date + Renewal Period) is less than the current date: 1. Renewal button showing 2. After renewal it is setting due date as per "RenewalPeriodBase". 3. But new due date is in past. How to restrict user from renewal if this situation happened. It is creating misleading information.
I agree, it's confusing that Koha allows a renewal that leaves an item overdue. It'd be nice to at least give a notification of some sort to alert the user that the item will still be overdue after the renewal.