I first noticed the null issue after protesting and reclaiming some lots. I missed the tutorial, and had not realized that you could build for free on them, so stumbled on it when that was simply the next lot I went to build on. By that time I had 2 or 3 of them, so this was after the second campaign day. I don't think it was only at those locations, but it felt like those things might be related. I'm pretty sure the first time I saw it was on a reclaimed lot, but also that at least one of the locations was not a reclaimed lot. My partner will be playing as well once we get through some more games neither of us have played yet, and will keep an eye out to see if we can get more details.
I think part of the issue with the Rating area is that it is all just called Rating, and clicking on any part of a given type/category gives the same text. It really does give the feeling that the number and bar are related. The way you have them separated by the amount you are gaining can help to divide them, but even then, which does that number apply to, and is it both? I think there needs to be a bit more detail on how the ratings work, and how to boost them compared to the currency. It feels like each category has different needs and it is not clear how they compare. One suggestion I have is to change the title to "Ratings & Points". Then mention the points (currency) can be spent on upgraded buildings, while the rating is the overall state of that category. The core thing to me is to use an additional term to tell players that there is more than 1 type of thing in there. The single title of "Rating" implies that everything in there is all connected.
Glad our feedback is helpful.