I have found many floating lights around LFLG, Grenoble, France. I have seen them for the first time right after downloading the last World Update, but I don’t know if they existed before, since it was my first time at that area. I loaded the same airport twice, and both times happened.
I don’t use any mod and I have never installed any 3rd party add-on.
I attach few pics here.
Thanks a lot