Thanks, but this is actually bug in the code. I was doing changes over and over to meet various requirements before the code could be merged and I made a mistake. Now I am not sure what to do - leave the code and correct docs or maybe fix it in the code, but all binding users would have to change their configs.
This is weird indeed. I would recomend to make a clean restart or even look into jsondb to check if there is something wrong.
The easiest way is work with PaperUI - define your bridge thing and the rest things are discovered automagically.