I think, but am not sure, this happens if I point and click just the wrong area: My ratings area turns blue. Left is when it's selected; right when not.
I don't see anything peculiar in the metadata. It's not a big deal as I don't use ratings at all, but still: How do I get rid of it?
It has a blue label assigned.
I ended up deleting the blue items, but I will keep and eye on it and see if I selected a lable again. I'll mark this as the correct answer. Thanks.