Hub 5 - forwarding multiple external ports to single internal port not working

[BlowMeDown]

I am trying to  set up port forwarding on the hub 5. I need;

Ext  --> Int
443  --> 8123
8123 --> 8123

I can set up the first rule OK but when I try to set up the second rule I get  "! The rule is overlapping" and it won't create the rule.

Is port forwarding simply broken and need my own router or is there something I've missed?

First rule created OK

Second rule generates error

[JGHSmith]

Did you get an answer to this? I have the same problem. How did you solve it?

[BlowMeDown]

I didn't get an answer. It was for Home Assistant and I was able I set everything up to use the same port (can't remember if it was 443 or 8123). Not sure if that was a good idea or not but I've stopped using it and gone back to SmartThings for home automation anyway.