UPNP doesn't work in 19.07.2 -> Works fine in 18.06.8!

Not sure what is going on but UPNP is completely useless in 19.07 branch, it doesn't do anything, whereas in the 18.06 branch it works perfectly fine!
I have only installed the UPNP module, clicked the checkbox, reboot and that's it....

Any ideas on how to "solve" this? Or it's really a bug and needs fixing?