I am using LR CC 2015.5.1 (on Windows 10) radial filters and they have moved. I spent a LOT of time placing them to remove spots and they didn't even retain the shapes I drew on them. This is very frustrating and makes me concerned that my entire library may be messed up. I don't know how/when this happened. This library was imported in 2015.5.1 and was not due to an update. I have also been experiencing lock-ups since updating to this version. I will post that in a separate post.