This Forum Beta is ONLY for registered owners of D-Link products in the USA for which we have created boards at this time.
I recommend setting Static IP addresses for all your devices on the router so that it will maintain the same IP address for each device. Then try to set the filter.
I don't think its a bug since the filter probably required the IP address to be set to static. If the filter was able to set the IP address and the addressed changed then it would break the filter. Hence you need to set Static IP addresses.
You still use DHCP, just do a reservation for the system you want to control. That way it always gets the same IP address, but you don't have to configure it manually.