Whenever I try and setup a port forward it accepts the input, but whenever I try and edit later its seems to have lost the input and fails to change or delete the forward with following error

Failed to delete rules : Removal of forward/8123/tcp/toaddr/ failed : Error: INVALID_PORT: toaddr

My original input had 192.168.10.4 as the destination address with same as original port selected, this details seems to be lost