Afraid this may be a production fault in your case. The only possible explanation I can arrive at is that there is a poor connection between the positive pin on the rba and the deck/base. There is a copper pin inside the base which sticks up, and that has to have good contact with the bottom of the rba. It’s the tank base that I suspect is faulty…don’t know what other explanation could fit
From experience, this is absolutely a possibility. I have two Aspire 9th tanks which takes both coils and builds. The 9th’s build deck fits into the base in a similar manner to the Hazard, and one of the two tanks won’t register the build deck (which is terribly frustrating). So you may have the same issue